18818500

素因数分解:

$2^2\times 5^3\times {\mathrm{61}}^1\times {\mathrm{617}}^1$

素因数の和:697

約数の個数: 48

約数和(自身を含む): 41841072

約数和(自身を除く): 23022572

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 61, 100, 122, 125, 244, 250, 305, 500, 610, 617, 1220, 1234, 1525, 2468, 3050, 3085, 6100, 6170, 7625, 12340, 15250, 15425, 30500, 30850, 37637, 61700, 75274, 77125, 150548, 154250, 188185, 308500, 376370, 752740, 940925, 1881850, 3763700, 4704625, 9409250, 18818500]

約数ペア:

[(1, 18818500), (2, 9409250), (4, 4704625), (5, 3763700), (10, 1881850), (20, 940925), (25, 752740), (50, 376370), (61, 308500), (100, 188185), (122, 154250), (125, 150548), (244, 77125), (250, 75274), (305, 61700), (500, 37637), (610, 30850), (617, 30500), (1220, 15425), (1234, 15250), (1525, 12340), (2468, 7625), (3050, 6170), (3085, 6100)]