21561750

素因数分解:

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

素因数の和:104

約数の個数: 144

約数和(自身を含む): 68481504

約数和(自身を除く): 46919754

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 25, 30, 35, 37, 42, 45, 50, 63, 70, 74, 75, 90, 105, 111, 125, 126, 150, 175, 185, 210, 222, 225, 250, 259, 315, 333, 350, 370, 375, 450, 518, 525, 555, 630, 666, 750, 777, 875, 925, 1050, 1110, 1125, 1295, 1369, 1554, 1575, 1665, 1750, 1850, 2250, 2331, 2590, 2625, 2738, 2775, 3150, 3330, 3885, 4107, 4625, 4662, 5250, 5550, 6475, 6845, 7770, 7875, 8214, 8325, 9250, 9583, 11655, 12321, 12950, 13690, 13875, 15750, 16650, 19166, 19425, 20535, 23310, 24642, 27750, 28749, 32375, 34225, 38850, 41070, 41625, 47915, 57498, 58275, 61605, 64750, 68450, 83250, 86247, 95830, 97125, 102675, 116550, 123210, 143745, 171125, 172494, 194250, 205350, 239575, 287490, 291375, 308025, 342250, 431235, 479150, 513375, 582750, 616050, 718725, 862470, 1026750, 1197875, 1437450, 1540125, 2156175, 2395750, 3080250, 3593625, 4312350, 7187250, 10780875, 21561750]

約数ペア:

[(1, 21561750), (2, 10780875), (3, 7187250), (5, 4312350), (6, 3593625), (7, 3080250), (9, 2395750), (10, 2156175), (14, 1540125), (15, 1437450), (18, 1197875), (21, 1026750), (25, 862470), (30, 718725), (35, 616050), (37, 582750), (42, 513375), (45, 479150), (50, 431235), (63, 342250), (70, 308025), (74, 291375), (75, 287490), (90, 239575), (105, 205350), (111, 194250), (125, 172494), (126, 171125), (150, 143745), (175, 123210), (185, 116550), (210, 102675), (222, 97125), (225, 95830), (250, 86247), (259, 83250), (315, 68450), (333, 64750), (350, 61605), (370, 58275), (375, 57498), (450, 47915), (518, 41625), (525, 41070), (555, 38850), (630, 34225), (666, 32375), (750, 28749), (777, 27750), (875, 24642), (925, 23310), (1050, 20535), (1110, 19425), (1125, 19166), (1295, 16650), (1369, 15750), (1554, 13875), (1575, 13690), (1665, 12950), (1750, 12321), (1850, 11655), (2250, 9583), (2331, 9250), (2590, 8325), (2625, 8214), (2738, 7875), (2775, 7770), (3150, 6845), (3330, 6475), (3885, 5550), (4107, 5250), (4625, 4662)]