91000900

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{21163}}^1$

素因数の和:21220

約数の個数: 36

約数和(自身を含む): 202073872

約数和(自身を除く): 111072972

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 21163, 42326, 84652, 105815, 211630, 423260, 529075, 910009, 1058150, 1820018, 2116300, 3640036, 4550045, 9100090, 18200180, 22750225, 45500450, 91000900]

約数ペア:

[(1, 91000900), (2, 45500450), (4, 22750225), (5, 18200180), (10, 9100090), (20, 4550045), (25, 3640036), (43, 2116300), (50, 1820018), (86, 1058150), (100, 910009), (172, 529075), (215, 423260), (430, 211630), (860, 105815), (1075, 84652), (2150, 42326), (4300, 21163)]