21144500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{3253}}^1$

素因数の和:3285

約数の個数: 48

約数和(自身を含む): 49747152

約数和(自身を除く): 28602652

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 650, 1300, 1625, 3250, 3253, 6500, 6506, 13012, 16265, 32530, 42289, 65060, 81325, 84578, 162650, 169156, 211445, 325300, 406625, 422890, 813250, 845780, 1057225, 1626500, 2114450, 4228900, 5286125, 10572250, 21144500]

約数ペア:

[(1, 21144500), (2, 10572250), (4, 5286125), (5, 4228900), (10, 2114450), (13, 1626500), (20, 1057225), (25, 845780), (26, 813250), (50, 422890), (52, 406625), (65, 325300), (100, 211445), (125, 169156), (130, 162650), (250, 84578), (260, 81325), (325, 65060), (500, 42289), (650, 32530), (1300, 16265), (1625, 13012), (3250, 6506), (3253, 6500)]