890500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{137}}^1$

素因数の和:169

約数の個数: 48

約数和(自身を含む): 2109744

約数和(自身を除く): 1219244

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 137, 250, 260, 274, 325, 500, 548, 650, 685, 1300, 1370, 1625, 1781, 2740, 3250, 3425, 3562, 6500, 6850, 7124, 8905, 13700, 17125, 17810, 34250, 35620, 44525, 68500, 89050, 178100, 222625, 445250, 890500]

約数ペア:

[(1, 890500), (2, 445250), (4, 222625), (5, 178100), (10, 89050), (13, 68500), (20, 44525), (25, 35620), (26, 34250), (50, 17810), (52, 17125), (65, 13700), (100, 8905), (125, 7124), (130, 6850), (137, 6500), (250, 3562), (260, 3425), (274, 3250), (325, 2740), (500, 1781), (548, 1625), (650, 1370), (685, 1300)]