25153540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{167}}^1\times {\mathrm{443}}^1$

素因数の和:636

約数の個数: 48

約数和(自身を含む): 56391552

約数和(自身を除く): 31238012

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 167, 170, 334, 340, 443, 668, 835, 886, 1670, 1772, 2215, 2839, 3340, 4430, 5678, 7531, 8860, 11356, 14195, 15062, 28390, 30124, 37655, 56780, 73981, 75310, 147962, 150620, 295924, 369905, 739810, 1257677, 1479620, 2515354, 5030708, 6288385, 12576770, 25153540]

約数ペア:

[(1, 25153540), (2, 12576770), (4, 6288385), (5, 5030708), (10, 2515354), (17, 1479620), (20, 1257677), (34, 739810), (68, 369905), (85, 295924), (167, 150620), (170, 147962), (334, 75310), (340, 73981), (443, 56780), (668, 37655), (835, 30124), (886, 28390), (1670, 15062), (1772, 14195), (2215, 11356), (2839, 8860), (3340, 7531), (4430, 5678)]