20190820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{983}}^1$

素因数の和:1084

約数の個数: 48

約数和(自身を含む): 46287360

約数和(自身を除く): 26096540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 260, 316, 395, 790, 983, 1027, 1580, 1966, 2054, 3932, 4108, 4915, 5135, 9830, 10270, 12779, 19660, 20540, 25558, 51116, 63895, 77657, 127790, 155314, 255580, 310628, 388285, 776570, 1009541, 1553140, 2019082, 4038164, 5047705, 10095410, 20190820]

約数ペア:

[(1, 20190820), (2, 10095410), (4, 5047705), (5, 4038164), (10, 2019082), (13, 1553140), (20, 1009541), (26, 776570), (52, 388285), (65, 310628), (79, 255580), (130, 155314), (158, 127790), (260, 77657), (316, 63895), (395, 51116), (790, 25558), (983, 20540), (1027, 19660), (1580, 12779), (1966, 10270), (2054, 9830), (3932, 5135), (4108, 4915)]