64391420

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{197}}^1\times {\mathrm{277}}^1$

素因数の和:542

約数の個数: 48

約数和(自身を含む): 138710880

約数和(自身を除く): 74319460

約数列:

[1, 2, 4, 5, 10, 20, 59, 118, 197, 236, 277, 295, 394, 554, 590, 788, 985, 1108, 1180, 1385, 1970, 2770, 3940, 5540, 11623, 16343, 23246, 32686, 46492, 54569, 58115, 65372, 81715, 109138, 116230, 163430, 218276, 232460, 272845, 326860, 545690, 1091380, 3219571, 6439142, 12878284, 16097855, 32195710, 64391420]

約数ペア:

[(1, 64391420), (2, 32195710), (4, 16097855), (5, 12878284), (10, 6439142), (20, 3219571), (59, 1091380), (118, 545690), (197, 326860), (236, 272845), (277, 232460), (295, 218276), (394, 163430), (554, 116230), (590, 109138), (788, 81715), (985, 65372), (1108, 58115), (1180, 54569), (1385, 46492), (1970, 32686), (2770, 23246), (3940, 16343), (5540, 11623)]