40625540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{487}}^1$

素因数の和:636

約数の個数: 48

約数和(自身を含む): 88378752

約数和(自身を除く): 47753212

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 97, 172, 194, 215, 388, 430, 485, 487, 860, 970, 974, 1940, 1948, 2435, 4171, 4870, 8342, 9740, 16684, 20855, 20941, 41710, 41882, 47239, 83420, 83764, 94478, 104705, 188956, 209410, 236195, 418820, 472390, 944780, 2031277, 4062554, 8125108, 10156385, 20312770, 40625540]

約数ペア:

[(1, 40625540), (2, 20312770), (4, 10156385), (5, 8125108), (10, 4062554), (20, 2031277), (43, 944780), (86, 472390), (97, 418820), (172, 236195), (194, 209410), (215, 188956), (388, 104705), (430, 94478), (485, 83764), (487, 83420), (860, 47239), (970, 41882), (974, 41710), (1940, 20941), (1948, 20855), (2435, 16684), (4171, 9740), (4870, 8342)]