78640490

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{253679}}^1$

素因数の和:253717

約数の個数: 16

約数和(自身を含む): 146119680

約数和(自身を除く): 67479190

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 253679, 507358, 1268395, 2536790, 7864049, 15728098, 39320245, 78640490]

約数ペア:

[(1, 78640490), (2, 39320245), (5, 15728098), (10, 7864049), (31, 2536790), (62, 1268395), (155, 507358), (310, 253679)]