1020500

素因数分解:

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

素因数の和:189

約数の個数: 48

約数和(自身を含む): 2415504

約数和(自身を除く): 1395004

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 157, 250, 260, 314, 325, 500, 628, 650, 785, 1300, 1570, 1625, 2041, 3140, 3250, 3925, 4082, 6500, 7850, 8164, 10205, 15700, 19625, 20410, 39250, 40820, 51025, 78500, 102050, 204100, 255125, 510250, 1020500]

約数ペア:

[(1, 1020500), (2, 510250), (4, 255125), (5, 204100), (10, 102050), (13, 78500), (20, 51025), (25, 40820), (26, 39250), (50, 20410), (52, 19625), (65, 15700), (100, 10205), (125, 8164), (130, 7850), (157, 6500), (250, 4082), (260, 3925), (314, 3250), (325, 3140), (500, 2041), (628, 1625), (650, 1570), (785, 1300)]