28915640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3271}}^1$

素因数の和:3312

約数の個数: 64

約数和(自身を含む): 74208960

約数和(自身を除く): 45293320

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, 3271, 4420, 6542, 8840, 13084, 16355, 26168, 32710, 42523, 55607, 65420, 85046, 111214, 130840, 170092, 212615, 222428, 278035, 340184, 425230, 444856, 556070, 722891, 850460, 1112140, 1445782, 1700920, 2224280, 2891564, 3614455, 5783128, 7228910, 14457820, 28915640]

約数ペア:

[(1, 28915640), (2, 14457820), (4, 7228910), (5, 5783128), (8, 3614455), (10, 2891564), (13, 2224280), (17, 1700920), (20, 1445782), (26, 1112140), (34, 850460), (40, 722891), (52, 556070), (65, 444856), (68, 425230), (85, 340184), (104, 278035), (130, 222428), (136, 212615), (170, 170092), (221, 130840), (260, 111214), (340, 85046), (442, 65420), (520, 55607), (680, 42523), (884, 32710), (1105, 26168), (1768, 16355), (2210, 13084), (3271, 8840), (4420, 6542)]