660217850

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{251}}^1\times {\mathrm{1697}}^1$

素因数の和:1991

約数の個数: 48

約数和(自身を含む): 1273418496

約数和(自身を除く): 613200646

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 155, 251, 310, 502, 775, 1255, 1550, 1697, 2510, 3394, 6275, 7781, 8485, 12550, 15562, 16970, 38905, 42425, 52607, 77810, 84850, 105214, 194525, 263035, 389050, 425947, 526070, 851894, 1315175, 2129735, 2630350, 4259470, 10648675, 13204357, 21297350, 26408714, 66021785, 132043570, 330108925, 660217850]

約数ペア:

[(1, 660217850), (2, 330108925), (5, 132043570), (10, 66021785), (25, 26408714), (31, 21297350), (50, 13204357), (62, 10648675), (155, 4259470), (251, 2630350), (310, 2129735), (502, 1315175), (775, 851894), (1255, 526070), (1550, 425947), (1697, 389050), (2510, 263035), (3394, 194525), (6275, 105214), (7781, 84850), (8485, 77810), (12550, 52607), (15562, 42425), (16970, 38905)]