408068180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{19867}}^1$

素因数の和:19968

約数の個数: 48

約数和(自身を含む): 934590720

約数和(自身を除く): 526522540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 260, 316, 395, 790, 1027, 1580, 2054, 4108, 5135, 10270, 19867, 20540, 39734, 79468, 99335, 198670, 258271, 397340, 516542, 1033084, 1291355, 1569493, 2582710, 3138986, 5165420, 6277972, 7847465, 15694930, 20403409, 31389860, 40806818, 81613636, 102017045, 204034090, 408068180]

約数ペア:

[(1, 408068180), (2, 204034090), (4, 102017045), (5, 81613636), (10, 40806818), (13, 31389860), (20, 20403409), (26, 15694930), (52, 7847465), (65, 6277972), (79, 5165420), (130, 3138986), (158, 2582710), (260, 1569493), (316, 1291355), (395, 1033084), (790, 516542), (1027, 397340), (1580, 258271), (2054, 198670), (4108, 99335), (5135, 79468), (10270, 39734), (19867, 20540)]