28738840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3251}}^1$

素因数の和:3292

約数の個数: 64

約数和(自身を含む): 73755360

約数和(自身を除く): 45016520

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, 3251, 4420, 6502, 8840, 13004, 16255, 26008, 32510, 42263, 55267, 65020, 84526, 110534, 130040, 169052, 211315, 221068, 276335, 338104, 422630, 442136, 552670, 718471, 845260, 1105340, 1436942, 1690520, 2210680, 2873884, 3592355, 5747768, 7184710, 14369420, 28738840]

約数ペア:

[(1, 28738840), (2, 14369420), (4, 7184710), (5, 5747768), (8, 3592355), (10, 2873884), (13, 2210680), (17, 1690520), (20, 1436942), (26, 1105340), (34, 845260), (40, 718471), (52, 552670), (65, 442136), (68, 422630), (85, 338104), (104, 276335), (130, 221068), (136, 211315), (170, 169052), (221, 130040), (260, 110534), (340, 84526), (442, 65020), (520, 55267), (680, 42263), (884, 32510), (1105, 26008), (1768, 16255), (2210, 13004), (3251, 8840), (4420, 6502)]