21118860

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1$

素因数の和:213

約数の個数: 192

約数和(自身を含む): 77629440

約数和(自身を除く): 56510580

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, 84, 90, 105, 108, 111, 126, 135, 140, 148, 151, 180, 185, 189, 210, 222, 252, 259, 270, 302, 315, 333, 370, 378, 420, 444, 453, 518, 540, 555, 604, 630, 666, 740, 755, 756, 777, 906, 945, 999, 1036, 1057, 1110, 1260, 1295, 1332, 1359, 1510, 1554, 1665, 1812, 1890, 1998, 2114, 2220, 2265, 2331, 2590, 2718, 3020, 3108, 3171, 3330, 3780, 3885, 3996, 4077, 4228, 4530, 4662, 4995, 5180, 5285, 5436, 5587, 6342, 6660, 6795, 6993, 7770, 8154, 9060, 9324, 9513, 9990, 10570, 11174, 11655, 12684, 13590, 13986, 15540, 15855, 16308, 16761, 19026, 19980, 20385, 21140, 22348, 23310, 27180, 27935, 27972, 28539, 31710, 33522, 34965, 38052, 39109, 40770, 46620, 47565, 50283, 55870, 57078, 63420, 67044, 69930, 78218, 81540, 83805, 95130, 100566, 111740, 114156, 117327, 139860, 142695, 150849, 156436, 167610, 190260, 195545, 201132, 234654, 251415, 285390, 301698, 335220, 351981, 391090, 469308, 502830, 570780, 586635, 603396, 703962, 754245, 782180, 1005660, 1055943, 1173270, 1407924, 1508490, 1759905, 2111886, 2346540, 3016980, 3519810, 4223772, 5279715, 7039620, 10559430, 21118860]

約数ペア:

[(1, 21118860), (2, 10559430), (3, 7039620), (4, 5279715), (5, 4223772), (6, 3519810), (7, 3016980), (9, 2346540), (10, 2111886), (12, 1759905), (14, 1508490), (15, 1407924), (18, 1173270), (20, 1055943), (21, 1005660), (27, 782180), (28, 754245), (30, 703962), (35, 603396), (36, 586635), (37, 570780), (42, 502830), (45, 469308), (54, 391090), (60, 351981), (63, 335220), (70, 301698), (74, 285390), (84, 251415), (90, 234654), (105, 201132), (108, 195545), (111, 190260), (126, 167610), (135, 156436), (140, 150849), (148, 142695), (151, 139860), (180, 117327), (185, 114156), (189, 111740), (210, 100566), (222, 95130), (252, 83805), (259, 81540), (270, 78218), (302, 69930), (315, 67044), (333, 63420), (370, 57078), (378, 55870), (420, 50283), (444, 47565), (453, 46620), (518, 40770), (540, 39109), (555, 38052), (604, 34965), (630, 33522), (666, 31710), (740, 28539), (755, 27972), (756, 27935), (777, 27180), (906, 23310), (945, 22348), (999, 21140), (1036, 20385), (1057, 19980), (1110, 19026), (1260, 16761), (1295, 16308), (1332, 15855), (1359, 15540), (1510, 13986), (1554, 13590), (1665, 12684), (1812, 11655), (1890, 11174), (1998, 10570), (2114, 9990), (2220, 9513), (2265, 9324), (2331, 9060), (2590, 8154), (2718, 7770), (3020, 6993), (3108, 6795), (3171, 6660), (3330, 6342), (3780, 5587), (3885, 5436), (3996, 5285), (4077, 5180), (4228, 4995), (4530, 4662)]