81047060

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{27197}}^1$

素因数の和:27355

約数の個数: 24

約数和(自身を含む): 171347400

約数和(自身を除く): 90300340

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 27197, 54394, 108788, 135985, 271970, 543940, 4052353, 8104706, 16209412, 20261765, 40523530, 81047060]

約数ペア:

[(1, 81047060), (2, 40523530), (4, 20261765), (5, 16209412), (10, 8104706), (20, 4052353), (149, 543940), (298, 271970), (596, 135985), (745, 108788), (1490, 54394), (2980, 27197)]