80978940

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1$

素因数の和:258

約数の個数: 240

約数和(自身を含む): 299716032

約数和(自身を除く): 218737092

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 37, 42, 45, 54, 60, 63, 70, 74, 81, 84, 90, 105, 108, 111, 126, 135, 140, 148, 162, 180, 185, 189, 193, 210, 222, 252, 259, 270, 315, 324, 333, 370, 378, 386, 405, 420, 444, 518, 540, 555, 567, 579, 630, 666, 740, 756, 772, 777, 810, 945, 965, 999, 1036, 1110, 1134, 1158, 1260, 1295, 1332, 1351, 1554, 1620, 1665, 1737, 1890, 1930, 1998, 2220, 2268, 2316, 2331, 2590, 2702, 2835, 2895, 2997, 3108, 3330, 3474, 3780, 3860, 3885, 3996, 4053, 4662, 4995, 5180, 5211, 5404, 5670, 5790, 5994, 6660, 6755, 6948, 6993, 7141, 7770, 8106, 8685, 9324, 9990, 10422, 11340, 11580, 11655, 11988, 12159, 13510, 13986, 14282, 14985, 15540, 15633, 16212, 17370, 19980, 20265, 20844, 20979, 21423, 23310, 24318, 26055, 27020, 27972, 28564, 29970, 31266, 34740, 34965, 35705, 36477, 40530, 41958, 42846, 46620, 48636, 49987, 52110, 59940, 60795, 62532, 64269, 69930, 71410, 72954, 78165, 81060, 83916, 85692, 99974, 104220, 104895, 107115, 109431, 121590, 128538, 139860, 142820, 145908, 149961, 156330, 182385, 192807, 199948, 209790, 214230, 218862, 243180, 249935, 257076, 299922, 312660, 321345, 364770, 385614, 419580, 428460, 437724, 449883, 499870, 547155, 578421, 599844, 642690, 729540, 749805, 771228, 899766, 964035, 999740, 1094310, 1156842, 1285380, 1349649, 1499610, 1799532, 1928070, 2188620, 2249415, 2313684, 2699298, 2892105, 2999220, 3856140, 4048947, 4498830, 5398596, 5784210, 6748245, 8097894, 8997660, 11568420, 13496490, 16195788, 20244735, 26992980, 40489470, 80978940]

約数ペア:

[(1, 80978940), (2, 40489470), (3, 26992980), (4, 20244735), (5, 16195788), (6, 13496490), (7, 11568420), (9, 8997660), (10, 8097894), (12, 6748245), (14, 5784210), (15, 5398596), (18, 4498830), (20, 4048947), (21, 3856140), (27, 2999220), (28, 2892105), (30, 2699298), (35, 2313684), (36, 2249415), (37, 2188620), (42, 1928070), (45, 1799532), (54, 1499610), (60, 1349649), (63, 1285380), (70, 1156842), (74, 1094310), (81, 999740), (84, 964035), (90, 899766), (105, 771228), (108, 749805), (111, 729540), (126, 642690), (135, 599844), (140, 578421), (148, 547155), (162, 499870), (180, 449883), (185, 437724), (189, 428460), (193, 419580), (210, 385614), (222, 364770), (252, 321345), (259, 312660), (270, 299922), (315, 257076), (324, 249935), (333, 243180), (370, 218862), (378, 214230), (386, 209790), (405, 199948), (420, 192807), (444, 182385), (518, 156330), (540, 149961), (555, 145908), (567, 142820), (579, 139860), (630, 128538), (666, 121590), (740, 109431), (756, 107115), (772, 104895), (777, 104220), (810, 99974), (945, 85692), (965, 83916), (999, 81060), (1036, 78165), (1110, 72954), (1134, 71410), (1158, 69930), (1260, 64269), (1295, 62532), (1332, 60795), (1351, 59940), (1554, 52110), (1620, 49987), (1665, 48636), (1737, 46620), (1890, 42846), (1930, 41958), (1998, 40530), (2220, 36477), (2268, 35705), (2316, 34965), (2331, 34740), (2590, 31266), (2702, 29970), (2835, 28564), (2895, 27972), (2997, 27020), (3108, 26055), (3330, 24318), (3474, 23310), (3780, 21423), (3860, 20979), (3885, 20844), (3996, 20265), (4053, 19980), (4662, 17370), (4995, 16212), (5180, 15633), (5211, 15540), (5404, 14985), (5670, 14282), (5790, 13986), (5994, 13510), (6660, 12159), (6755, 11988), (6948, 11655), (6993, 11580), (7141, 11340), (7770, 10422), (8106, 9990), (8685, 9324)]