51025000

素因数分解:

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

素因数の和:201

約数の個数: 96

約数和(自身を含む): 129601080

約数和(自身を除く): 78576080

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, 3125, 3140, 3250, 3925, 4082, 5000, 6250, 6280, 6500, 7850, 8125, 8164, 10205, 12500, 13000, 15700, 16250, 16328, 19625, 20410, 25000, 31400, 32500, 39250, 40625, 40820, 51025, 65000, 78500, 81250, 81640, 98125, 102050, 157000, 162500, 196250, 204100, 255125, 325000, 392500, 408200, 490625, 510250, 785000, 981250, 1020500, 1275625, 1962500, 2041000, 2551250, 3925000, 5102500, 6378125, 10205000, 12756250, 25512500, 51025000]

約数ペア:

[(1, 51025000), (2, 25512500), (4, 12756250), (5, 10205000), (8, 6378125), (10, 5102500), (13, 3925000), (20, 2551250), (25, 2041000), (26, 1962500), (40, 1275625), (50, 1020500), (52, 981250), (65, 785000), (100, 510250), (104, 490625), (125, 408200), (130, 392500), (157, 325000), (200, 255125), (250, 204100), (260, 196250), (314, 162500), (325, 157000), (500, 102050), (520, 98125), (625, 81640), (628, 81250), (650, 78500), (785, 65000), (1000, 51025), (1250, 40820), (1256, 40625), (1300, 39250), (1570, 32500), (1625, 31400), (2041, 25000), (2500, 20410), (2600, 19625), (3125, 16328), (3140, 16250), (3250, 15700), (3925, 13000), (4082, 12500), (5000, 10205), (6250, 8164), (6280, 8125), (6500, 7850)]