2795980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 6531840

約数和(自身を除く): 3735860

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 179, 220, 284, 355, 358, 710, 716, 781, 895, 1420, 1562, 1790, 1969, 3124, 3580, 3905, 3938, 7810, 7876, 9845, 12709, 15620, 19690, 25418, 39380, 50836, 63545, 127090, 139799, 254180, 279598, 559196, 698995, 1397990, 2795980]

約数ペア:

[(1, 2795980), (2, 1397990), (4, 698995), (5, 559196), (10, 279598), (11, 254180), (20, 139799), (22, 127090), (44, 63545), (55, 50836), (71, 39380), (110, 25418), (142, 19690), (179, 15620), (220, 12709), (284, 9845), (355, 7876), (358, 7810), (710, 3938), (716, 3905), (781, 3580), (895, 3124), (1420, 1969), (1562, 1790)]