28531000

素因数分解:

$2^3\times 5^3\times {\mathrm{103}}^1\times {\mathrm{277}}^1$

素因数の和:401

約数の個数: 64

約数和(自身を含む): 67654080

約数和(自身を除く): 39123080

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 103, 125, 200, 206, 250, 277, 412, 500, 515, 554, 824, 1000, 1030, 1108, 1385, 2060, 2216, 2575, 2770, 4120, 5150, 5540, 6925, 10300, 11080, 12875, 13850, 20600, 25750, 27700, 28531, 34625, 51500, 55400, 57062, 69250, 103000, 114124, 138500, 142655, 228248, 277000, 285310, 570620, 713275, 1141240, 1426550, 2853100, 3566375, 5706200, 7132750, 14265500, 28531000]

約数ペア:

[(1, 28531000), (2, 14265500), (4, 7132750), (5, 5706200), (8, 3566375), (10, 2853100), (20, 1426550), (25, 1141240), (40, 713275), (50, 570620), (100, 285310), (103, 277000), (125, 228248), (200, 142655), (206, 138500), (250, 114124), (277, 103000), (412, 69250), (500, 57062), (515, 55400), (554, 51500), (824, 34625), (1000, 28531), (1030, 27700), (1108, 25750), (1385, 20600), (2060, 13850), (2216, 12875), (2575, 11080), (2770, 10300), (4120, 6925), (5150, 5540)]