20977562020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{577}}^1\times {\mathrm{25603}}^1$

素因数の和:26260

約数の個数: 48

約数和(自身を含む): 44752514688

約数和(自身を除く): 23774952668

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 577, 710, 1154, 1420, 2308, 2885, 5770, 11540, 25603, 40967, 51206, 81934, 102412, 128015, 163868, 204835, 256030, 409670, 512060, 819340, 1817813, 3635626, 7271252, 9089065, 14772931, 18178130, 29545862, 36356260, 59091724, 73864655, 147729310, 295458620, 1048878101, 2097756202, 4195512404, 5244390505, 10488781010, 20977562020]

約数ペア:

[(1, 20977562020), (2, 10488781010), (4, 5244390505), (5, 4195512404), (10, 2097756202), (20, 1048878101), (71, 295458620), (142, 147729310), (284, 73864655), (355, 59091724), (577, 36356260), (710, 29545862), (1154, 18178130), (1420, 14772931), (2308, 9089065), (2885, 7271252), (5770, 3635626), (11540, 1817813), (25603, 819340), (40967, 512060), (51206, 409670), (81934, 256030), (102412, 204835), (128015, 163868)]