65125000

素因数分解:

$2^3\times 5^6\times {\mathrm{521}}^1$

素因数の和:557

約数の個数: 56

約数和(自身を含む): 152927730

約数和(自身を除く): 87802730

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 521, 625, 1000, 1042, 1250, 2084, 2500, 2605, 3125, 4168, 5000, 5210, 6250, 10420, 12500, 13025, 15625, 20840, 25000, 26050, 31250, 52100, 62500, 65125, 104200, 125000, 130250, 260500, 325625, 521000, 651250, 1302500, 1628125, 2605000, 3256250, 6512500, 8140625, 13025000, 16281250, 32562500, 65125000]

約数ペア:

[(1, 65125000), (2, 32562500), (4, 16281250), (5, 13025000), (8, 8140625), (10, 6512500), (20, 3256250), (25, 2605000), (40, 1628125), (50, 1302500), (100, 651250), (125, 521000), (200, 325625), (250, 260500), (500, 130250), (521, 125000), (625, 104200), (1000, 65125), (1042, 62500), (1250, 52100), (2084, 31250), (2500, 26050), (2605, 25000), (3125, 20840), (4168, 15625), (5000, 13025), (5210, 12500), (6250, 10420)]