25512500

素因数分解:

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

素因数の和:199

約数の個数: 72

約数和(自身を含む): 60480504

約数和(自身を除く): 34968004

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 157, 250, 260, 314, 325, 500, 625, 628, 650, 785, 1250, 1300, 1570, 1625, 2041, 2500, 3125, 3140, 3250, 3925, 4082, 6250, 6500, 7850, 8125, 8164, 10205, 12500, 15700, 16250, 19625, 20410, 32500, 39250, 40625, 40820, 51025, 78500, 81250, 98125, 102050, 162500, 196250, 204100, 255125, 392500, 490625, 510250, 981250, 1020500, 1275625, 1962500, 2551250, 5102500, 6378125, 12756250, 25512500]

約数ペア:

[(1, 25512500), (2, 12756250), (4, 6378125), (5, 5102500), (10, 2551250), (13, 1962500), (20, 1275625), (25, 1020500), (26, 981250), (50, 510250), (52, 490625), (65, 392500), (100, 255125), (125, 204100), (130, 196250), (157, 162500), (250, 102050), (260, 98125), (314, 81250), (325, 78500), (500, 51025), (625, 40820), (628, 40625), (650, 39250), (785, 32500), (1250, 20410), (1300, 19625), (1570, 16250), (1625, 15700), (2041, 12500), (2500, 10205), (3125, 8164), (3140, 8125), (3250, 7850), (3925, 6500), (4082, 6250)]