21911120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3557}}^1$

素因数の和:3588

約数の個数: 80

約数和(自身を含む): 63531648

約数和(自身を除く): 41620528

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 440, 560, 616, 770, 880, 1232, 1540, 3080, 3557, 6160, 7114, 14228, 17785, 24899, 28456, 35570, 39127, 49798, 56912, 71140, 78254, 99596, 124495, 142280, 156508, 195635, 199192, 248990, 273889, 284560, 313016, 391270, 398384, 497980, 547778, 626032, 782540, 995960, 1095556, 1369445, 1565080, 1991920, 2191112, 2738890, 3130160, 4382224, 5477780, 10955560, 21911120]

約数ペア:

[(1, 21911120), (2, 10955560), (4, 5477780), (5, 4382224), (7, 3130160), (8, 2738890), (10, 2191112), (11, 1991920), (14, 1565080), (16, 1369445), (20, 1095556), (22, 995960), (28, 782540), (35, 626032), (40, 547778), (44, 497980), (55, 398384), (56, 391270), (70, 313016), (77, 284560), (80, 273889), (88, 248990), (110, 199192), (112, 195635), (140, 156508), (154, 142280), (176, 124495), (220, 99596), (280, 78254), (308, 71140), (385, 56912), (440, 49798), (560, 39127), (616, 35570), (770, 28456), (880, 24899), (1232, 17785), (1540, 14228), (3080, 7114), (3557, 6160)]