18668750

素因数分解:

$2^1\times 5^5\times {\mathrm{29}}^1\times {\mathrm{103}}^1$

素因数の和:159

約数の個数: 48

約数和(自身を含む): 36560160

約数和(自身を除く): 17891410

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 103, 125, 145, 206, 250, 290, 515, 625, 725, 1030, 1250, 1450, 2575, 2987, 3125, 3625, 5150, 5974, 6250, 7250, 12875, 14935, 18125, 25750, 29870, 36250, 64375, 74675, 90625, 128750, 149350, 181250, 321875, 373375, 643750, 746750, 1866875, 3733750, 9334375, 18668750]

約数ペア:

[(1, 18668750), (2, 9334375), (5, 3733750), (10, 1866875), (25, 746750), (29, 643750), (50, 373375), (58, 321875), (103, 181250), (125, 149350), (145, 128750), (206, 90625), (250, 74675), (290, 64375), (515, 36250), (625, 29870), (725, 25750), (1030, 18125), (1250, 14935), (1450, 12875), (2575, 7250), (2987, 6250), (3125, 5974), (3625, 5150)]