1905640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:154

約数の個数: 64

約数和(自身を含む): 4821120

約数和(自身を除く): 2915480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 61, 71, 88, 110, 122, 142, 220, 244, 284, 305, 355, 440, 488, 568, 610, 671, 710, 781, 1220, 1342, 1420, 1562, 2440, 2684, 2840, 3124, 3355, 3905, 4331, 5368, 6248, 6710, 7810, 8662, 13420, 15620, 17324, 21655, 26840, 31240, 34648, 43310, 47641, 86620, 95282, 173240, 190564, 238205, 381128, 476410, 952820, 1905640]

約数ペア:

[(1, 1905640), (2, 952820), (4, 476410), (5, 381128), (8, 238205), (10, 190564), (11, 173240), (20, 95282), (22, 86620), (40, 47641), (44, 43310), (55, 34648), (61, 31240), (71, 26840), (88, 21655), (110, 17324), (122, 15620), (142, 13420), (220, 8662), (244, 7810), (284, 6710), (305, 6248), (355, 5368), (440, 4331), (488, 3905), (568, 3355), (610, 3124), (671, 2840), (710, 2684), (781, 2440), (1220, 1562), (1342, 1420)]