28691000

素因数分解:

$2^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{2207}}^1$

素因数の和:2241

約数の個数: 64

約数和(自身を含む): 72334080

約数和(自身を除く): 43643080

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, 2207, 2600, 3250, 4414, 6500, 8828, 11035, 13000, 17656, 22070, 28691, 44140, 55175, 57382, 88280, 110350, 114764, 143455, 220700, 229528, 275875, 286910, 441400, 551750, 573820, 717275, 1103500, 1147640, 1434550, 2207000, 2869100, 3586375, 5738200, 7172750, 14345500, 28691000]

約数ペア:

[(1, 28691000), (2, 14345500), (4, 7172750), (5, 5738200), (8, 3586375), (10, 2869100), (13, 2207000), (20, 1434550), (25, 1147640), (26, 1103500), (40, 717275), (50, 573820), (52, 551750), (65, 441400), (100, 286910), (104, 275875), (125, 229528), (130, 220700), (200, 143455), (250, 114764), (260, 110350), (325, 88280), (500, 57382), (520, 55175), (650, 44140), (1000, 28691), (1300, 22070), (1625, 17656), (2207, 13000), (2600, 11035), (3250, 8828), (4414, 6500)]