21151000

素因数分解:

$2^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{1627}}^1$

素因数の和:1661

約数の個数: 64

約数和(自身を含む): 53333280

約数和(自身を除く): 32182280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 125, 130, 200, 250, 260, 325, 500, 520, 650, 1000, 1300, 1625, 1627, 2600, 3250, 3254, 6500, 6508, 8135, 13000, 13016, 16270, 21151, 32540, 40675, 42302, 65080, 81350, 84604, 105755, 162700, 169208, 203375, 211510, 325400, 406750, 423020, 528775, 813500, 846040, 1057550, 1627000, 2115100, 2643875, 4230200, 5287750, 10575500, 21151000]

約数ペア:

[(1, 21151000), (2, 10575500), (4, 5287750), (5, 4230200), (8, 2643875), (10, 2115100), (13, 1627000), (20, 1057550), (25, 846040), (26, 813500), (40, 528775), (50, 423020), (52, 406750), (65, 325400), (100, 211510), (104, 203375), (125, 169208), (130, 162700), (200, 105755), (250, 84604), (260, 81350), (325, 65080), (500, 42302), (520, 40675), (650, 32540), (1000, 21151), (1300, 16270), (1625, 13016), (1627, 13000), (2600, 8135), (3250, 6508), (3254, 6500)]