12751540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 28030464

約数和(自身を除く): 15278924

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 131, 155, 157, 262, 310, 314, 524, 620, 628, 655, 785, 1310, 1570, 2620, 3140, 4061, 4867, 8122, 9734, 16244, 19468, 20305, 20567, 24335, 40610, 41134, 48670, 81220, 82268, 97340, 102835, 205670, 411340, 637577, 1275154, 2550308, 3187885, 6375770, 12751540]

約数ペア:

[(1, 12751540), (2, 6375770), (4, 3187885), (5, 2550308), (10, 1275154), (20, 637577), (31, 411340), (62, 205670), (124, 102835), (131, 97340), (155, 82268), (157, 81220), (262, 48670), (310, 41134), (314, 40610), (524, 24335), (620, 20567), (628, 20305), (655, 19468), (785, 16244), (1310, 9734), (1570, 8122), (2620, 4867), (3140, 4061)]