20244640

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9733}}^1$

素因数の和:9761

約数の個数: 48

約数和(自身を含む): 51512328

約数和(自身を除く): 31267688

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9733, 19466, 38932, 48665, 77864, 97330, 126529, 155728, 194660, 253058, 311456, 389320, 506116, 632645, 778640, 1012232, 1265290, 1557280, 2024464, 2530580, 4048928, 5061160, 10122320, 20244640]

約数ペア:

[(1, 20244640), (2, 10122320), (4, 5061160), (5, 4048928), (8, 2530580), (10, 2024464), (13, 1557280), (16, 1265290), (20, 1012232), (26, 778640), (32, 632645), (40, 506116), (52, 389320), (65, 311456), (80, 253058), (104, 194660), (130, 155728), (160, 126529), (208, 97330), (260, 77864), (416, 48665), (520, 38932), (1040, 19466), (2080, 9733)]