513500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1$

素因数の和:111

約数の個数: 48

約数和(自身を含む): 1223040

約数和(自身を除く): 709540

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 79, 100, 125, 130, 158, 250, 260, 316, 325, 395, 500, 650, 790, 1027, 1300, 1580, 1625, 1975, 2054, 3250, 3950, 4108, 5135, 6500, 7900, 9875, 10270, 19750, 20540, 25675, 39500, 51350, 102700, 128375, 256750, 513500]

約数ペア:

[(1, 513500), (2, 256750), (4, 128375), (5, 102700), (10, 51350), (13, 39500), (20, 25675), (25, 20540), (26, 19750), (50, 10270), (52, 9875), (65, 7900), (79, 6500), (100, 5135), (125, 4108), (130, 3950), (158, 3250), (250, 2054), (260, 1975), (316, 1625), (325, 1580), (395, 1300), (500, 1027), (650, 790)]