78543140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{1669}}^1$

素因数の和:1872

約数の個数: 48

約数和(自身を含む): 178716720

約数和(自身を除く): 100173580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 181, 260, 362, 724, 905, 1669, 1810, 2353, 3338, 3620, 4706, 6676, 8345, 9412, 11765, 16690, 21697, 23530, 33380, 43394, 47060, 86788, 108485, 216970, 302089, 433940, 604178, 1208356, 1510445, 3020890, 3927157, 6041780, 7854314, 15708628, 19635785, 39271570, 78543140]

約数ペア:

[(1, 78543140), (2, 39271570), (4, 19635785), (5, 15708628), (10, 7854314), (13, 6041780), (20, 3927157), (26, 3020890), (52, 1510445), (65, 1208356), (130, 604178), (181, 433940), (260, 302089), (362, 216970), (724, 108485), (905, 86788), (1669, 47060), (1810, 43394), (2353, 33380), (3338, 23530), (3620, 21697), (4706, 16690), (6676, 11765), (8345, 9412)]