21578924980

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{1151}}^1\times {\mathrm{5179}}^1$

素因数の和:6520

約数の個数: 48

約数和(自身を含む): 45614499840

約数和(自身を除く): 24035574860

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1151, 1810, 2302, 3620, 4604, 5179, 5755, 10358, 11510, 20716, 23020, 25895, 51790, 103580, 208331, 416662, 833324, 937399, 1041655, 1874798, 2083310, 3749596, 4166620, 4686995, 5961029, 9373990, 11922058, 18747980, 23844116, 29805145, 59610290, 119220580, 1078946249, 2157892498, 4315784996, 5394731245, 10789462490, 21578924980]

約数ペア:

[(1, 21578924980), (2, 10789462490), (4, 5394731245), (5, 4315784996), (10, 2157892498), (20, 1078946249), (181, 119220580), (362, 59610290), (724, 29805145), (905, 23844116), (1151, 18747980), (1810, 11922058), (2302, 9373990), (3620, 5961029), (4604, 4686995), (5179, 4166620), (5755, 3749596), (10358, 2083310), (11510, 1874798), (20716, 1041655), (23020, 937399), (25895, 833324), (51790, 416662), (103580, 208331)]