81684638

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{253679}}^1$

素因数の和:253711

約数の個数: 16

約数和(自身を含む): 146119680

約数和(自身を除く): 64435042

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 253679, 507358, 1775753, 3551506, 5834617, 11669234, 40842319, 81684638]

約数ペア:

[(1, 81684638), (2, 40842319), (7, 11669234), (14, 5834617), (23, 3551506), (46, 1775753), (161, 507358), (322, 253679)]