20838480

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6679}}^1$

素因数の和:6708

約数の個数: 80

約数和(自身を含む): 69578880

約数和(自身を除く): 48740400

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, 6679, 13358, 20037, 26716, 33395, 40074, 53432, 66790, 80148, 86827, 100185, 106864, 133580, 160296, 173654, 200370, 260481, 267160, 320592, 347308, 400740, 434135, 520962, 534320, 694616, 801480, 868270, 1041924, 1302405, 1389232, 1602960, 1736540, 2083848, 2604810, 3473080, 4167696, 5209620, 6946160, 10419240, 20838480]

約数ペア:

[(1, 20838480), (2, 10419240), (3, 6946160), (4, 5209620), (5, 4167696), (6, 3473080), (8, 2604810), (10, 2083848), (12, 1736540), (13, 1602960), (15, 1389232), (16, 1302405), (20, 1041924), (24, 868270), (26, 801480), (30, 694616), (39, 534320), (40, 520962), (48, 434135), (52, 400740), (60, 347308), (65, 320592), (78, 267160), (80, 260481), (104, 200370), (120, 173654), (130, 160296), (156, 133580), (195, 106864), (208, 100185), (240, 86827), (260, 80148), (312, 66790), (390, 53432), (520, 40074), (624, 33395), (780, 26716), (1040, 20037), (1560, 13358), (3120, 6679)]