9901180

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{397}}^1$

素因数の和:478

約数の個数: 48

約数和(自身を含む): 22065120

約数和(自身を除く): 12163940

約数列:

[1, 2, 4, 5, 10, 20, 29, 43, 58, 86, 116, 145, 172, 215, 290, 397, 430, 580, 794, 860, 1247, 1588, 1985, 2494, 3970, 4988, 6235, 7940, 11513, 12470, 17071, 23026, 24940, 34142, 46052, 57565, 68284, 85355, 115130, 170710, 230260, 341420, 495059, 990118, 1980236, 2475295, 4950590, 9901180]

約数ペア:

[(1, 9901180), (2, 4950590), (4, 2475295), (5, 1980236), (10, 990118), (20, 495059), (29, 341420), (43, 230260), (58, 170710), (86, 115130), (116, 85355), (145, 68284), (172, 57565), (215, 46052), (290, 34142), (397, 24940), (430, 23026), (580, 17071), (794, 12470), (860, 11513), (1247, 7940), (1588, 6235), (1985, 4988), (2494, 3970)]