289375390

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1\times {\mathrm{3719}}^1$

素因数の和:4008

約数の個数: 32

約数和(自身を含む): 539965440

約数和(自身を除く): 250590050

約数列:

[1, 2, 5, 10, 31, 62, 155, 251, 310, 502, 1255, 2510, 3719, 7438, 7781, 15562, 18595, 37190, 38905, 77810, 115289, 230578, 576445, 933469, 1152890, 1866938, 4667345, 9334690, 28937539, 57875078, 144687695, 289375390]

約数ペア:

[(1, 289375390), (2, 144687695), (5, 57875078), (10, 28937539), (31, 9334690), (62, 4667345), (155, 1866938), (251, 1152890), (310, 933469), (502, 576445), (1255, 230578), (2510, 115289), (3719, 77810), (7438, 38905), (7781, 37190), (15562, 18595)]