909090

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1$

素因数の和:73

約数の個数: 128

約数和(自身を含む): 3064320

約数和(自身を除く): 2155230

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 21, 26, 27, 30, 35, 37, 39, 42, 45, 54, 63, 65, 70, 74, 78, 90, 91, 105, 111, 117, 126, 130, 135, 182, 185, 189, 195, 210, 222, 234, 259, 270, 273, 315, 333, 351, 370, 378, 390, 455, 481, 518, 546, 555, 585, 630, 666, 702, 777, 819, 910, 945, 962, 999, 1110, 1170, 1295, 1365, 1443, 1554, 1638, 1665, 1755, 1890, 1998, 2331, 2405, 2457, 2590, 2730, 2886, 3330, 3367, 3510, 3885, 4095, 4329, 4662, 4810, 4914, 4995, 6734, 6993, 7215, 7770, 8190, 8658, 9990, 10101, 11655, 12285, 12987, 13986, 14430, 16835, 20202, 21645, 23310, 24570, 25974, 30303, 33670, 34965, 43290, 50505, 60606, 64935, 69930, 90909, 101010, 129870, 151515, 181818, 303030, 454545, 909090]

約数ペア:

[(1, 909090), (2, 454545), (3, 303030), (5, 181818), (6, 151515), (7, 129870), (9, 101010), (10, 90909), (13, 69930), (14, 64935), (15, 60606), (18, 50505), (21, 43290), (26, 34965), (27, 33670), (30, 30303), (35, 25974), (37, 24570), (39, 23310), (42, 21645), (45, 20202), (54, 16835), (63, 14430), (65, 13986), (70, 12987), (74, 12285), (78, 11655), (90, 10101), (91, 9990), (105, 8658), (111, 8190), (117, 7770), (126, 7215), (130, 6993), (135, 6734), (182, 4995), (185, 4914), (189, 4810), (195, 4662), (210, 4329), (222, 4095), (234, 3885), (259, 3510), (270, 3367), (273, 3330), (315, 2886), (333, 2730), (351, 2590), (370, 2457), (378, 2405), (390, 2331), (455, 1998), (481, 1890), (518, 1755), (546, 1665), (555, 1638), (585, 1554), (630, 1443), (666, 1365), (702, 1295), (777, 1170), (819, 1110), (910, 999), (945, 962)]