18122320

素因数分解:

$2^4\times 5^1\times {\mathrm{359}}^1\times {\mathrm{631}}^1$

素因数の和:1003

約数の個数: 40

約数和(自身を含む): 42318720

約数和(自身を除く): 24196400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 359, 631, 718, 1262, 1436, 1795, 2524, 2872, 3155, 3590, 5048, 5744, 6310, 7180, 10096, 12620, 14360, 25240, 28720, 50480, 226529, 453058, 906116, 1132645, 1812232, 2265290, 3624464, 4530580, 9061160, 18122320]

約数ペア:

[(1, 18122320), (2, 9061160), (4, 4530580), (5, 3624464), (8, 2265290), (10, 1812232), (16, 1132645), (20, 906116), (40, 453058), (80, 226529), (359, 50480), (631, 28720), (718, 25240), (1262, 14360), (1436, 12620), (1795, 10096), (2524, 7180), (2872, 6310), (3155, 5744), (3590, 5048)]