51465140

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{997}}^1$

素因数の和:1124

約数の個数: 48

約数和(自身を含む): 113173200

約数和(自身を除く): 61708060

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 89, 116, 145, 178, 290, 356, 445, 580, 890, 997, 1780, 1994, 2581, 3988, 4985, 5162, 9970, 10324, 12905, 19940, 25810, 28913, 51620, 57826, 88733, 115652, 144565, 177466, 289130, 354932, 443665, 578260, 887330, 1774660, 2573257, 5146514, 10293028, 12866285, 25732570, 51465140]

約数ペア:

[(1, 51465140), (2, 25732570), (4, 12866285), (5, 10293028), (10, 5146514), (20, 2573257), (29, 1774660), (58, 887330), (89, 578260), (116, 443665), (145, 354932), (178, 289130), (290, 177466), (356, 144565), (445, 115652), (580, 88733), (890, 57826), (997, 51620), (1780, 28913), (1994, 25810), (2581, 19940), (3988, 12905), (4985, 10324), (5162, 9970)]