90505880

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{25423}}^1$

素因数の和:25523

約数の個数: 32

約数和(自身を含む): 205934400

約数和(自身を除く): 115428520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 25423, 50846, 101692, 127115, 203384, 254230, 508460, 1016920, 2262647, 4525294, 9050588, 11313235, 18101176, 22626470, 45252940, 90505880]

約数ペア:

[(1, 90505880), (2, 45252940), (4, 22626470), (5, 18101176), (8, 11313235), (10, 9050588), (20, 4525294), (40, 2262647), (89, 1016920), (178, 508460), (356, 254230), (445, 203384), (712, 127115), (890, 101692), (1780, 50846), (3560, 25423)]