10205000

素因数分解:

$2^3\times 5^4\times {\mathrm{13}}^1\times {\mathrm{157}}^1$

素因数の和:196

約数の個数: 80

約数和(自身を含む): 25913580

約数和(自身を除く): 15708580

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 125, 130, 157, 200, 250, 260, 314, 325, 500, 520, 625, 628, 650, 785, 1000, 1250, 1256, 1300, 1570, 1625, 2041, 2500, 2600, 3140, 3250, 3925, 4082, 5000, 6280, 6500, 7850, 8125, 8164, 10205, 13000, 15700, 16250, 16328, 19625, 20410, 31400, 32500, 39250, 40820, 51025, 65000, 78500, 81640, 98125, 102050, 157000, 196250, 204100, 255125, 392500, 408200, 510250, 785000, 1020500, 1275625, 2041000, 2551250, 5102500, 10205000]

約数ペア:

[(1, 10205000), (2, 5102500), (4, 2551250), (5, 2041000), (8, 1275625), (10, 1020500), (13, 785000), (20, 510250), (25, 408200), (26, 392500), (40, 255125), (50, 204100), (52, 196250), (65, 157000), (100, 102050), (104, 98125), (125, 81640), (130, 78500), (157, 65000), (200, 51025), (250, 40820), (260, 39250), (314, 32500), (325, 31400), (500, 20410), (520, 19625), (625, 16328), (628, 16250), (650, 15700), (785, 13000), (1000, 10205), (1250, 8164), (1256, 8125), (1300, 7850), (1570, 6500), (1625, 6280), (2041, 5000), (2500, 4082), (2600, 3925), (3140, 3250)]