28791880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3257}}^1$

素因数の和:3298

約数の個数: 64

約数和(自身を含む): 73891440

約数和(自身を除く): 45099560

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 104, 130, 136, 170, 221, 260, 340, 442, 520, 680, 884, 1105, 1768, 2210, 3257, 4420, 6514, 8840, 13028, 16285, 26056, 32570, 42341, 55369, 65140, 84682, 110738, 130280, 169364, 211705, 221476, 276845, 338728, 423410, 442952, 553690, 719797, 846820, 1107380, 1439594, 1693640, 2214760, 2879188, 3598985, 5758376, 7197970, 14395940, 28791880]

約数ペア:

[(1, 28791880), (2, 14395940), (4, 7197970), (5, 5758376), (8, 3598985), (10, 2879188), (13, 2214760), (17, 1693640), (20, 1439594), (26, 1107380), (34, 846820), (40, 719797), (52, 553690), (65, 442952), (68, 423410), (85, 338728), (104, 276845), (130, 221476), (136, 211705), (170, 169364), (221, 130280), (260, 110738), (340, 84682), (442, 65140), (520, 55369), (680, 42341), (884, 32570), (1105, 26056), (1768, 16285), (2210, 13028), (3257, 8840), (4420, 6514)]