64399920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{20641}}^1$

素因数の和:20670

約数の個数: 80

約数和(自身を含む): 215007072

約数和(自身を除く): 150607152

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 20641, 41282, 61923, 82564, 103205, 123846, 165128, 206410, 247692, 268333, 309615, 330256, 412820, 495384, 536666, 619230, 804999, 825640, 990768, 1073332, 1238460, 1341665, 1609998, 1651280, 2146664, 2476920, 2683330, 3219996, 4024995, 4293328, 4953840, 5366660, 6439992, 8049990, 10733320, 12879984, 16099980, 21466640, 32199960, 64399920]

約数ペア:

[(1, 64399920), (2, 32199960), (3, 21466640), (4, 16099980), (5, 12879984), (6, 10733320), (8, 8049990), (10, 6439992), (12, 5366660), (13, 4953840), (15, 4293328), (16, 4024995), (20, 3219996), (24, 2683330), (26, 2476920), (30, 2146664), (39, 1651280), (40, 1609998), (48, 1341665), (52, 1238460), (60, 1073332), (65, 990768), (78, 825640), (80, 804999), (104, 619230), (120, 536666), (130, 495384), (156, 412820), (195, 330256), (208, 309615), (240, 268333), (260, 247692), (312, 206410), (390, 165128), (520, 123846), (624, 103205), (780, 82564), (1040, 61923), (1560, 41282), (3120, 20641)]