20170280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{491}}^1$

素因数の和:594

約数の個数: 64

約数和(自身を含む): 49593600

約数和(自身を除く): 29423320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 79, 104, 130, 158, 260, 316, 395, 491, 520, 632, 790, 982, 1027, 1580, 1964, 2054, 2455, 3160, 3928, 4108, 4910, 5135, 6383, 8216, 9820, 10270, 12766, 19640, 20540, 25532, 31915, 38789, 41080, 51064, 63830, 77578, 127660, 155156, 193945, 255320, 310312, 387890, 504257, 775780, 1008514, 1551560, 2017028, 2521285, 4034056, 5042570, 10085140, 20170280]

約数ペア:

[(1, 20170280), (2, 10085140), (4, 5042570), (5, 4034056), (8, 2521285), (10, 2017028), (13, 1551560), (20, 1008514), (26, 775780), (40, 504257), (52, 387890), (65, 310312), (79, 255320), (104, 193945), (130, 155156), (158, 127660), (260, 77578), (316, 63830), (395, 51064), (491, 41080), (520, 38789), (632, 31915), (790, 25532), (982, 20540), (1027, 19640), (1580, 12766), (1964, 10270), (2054, 9820), (2455, 8216), (3160, 6383), (3928, 5135), (4108, 4910)]