18660985

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{397}}^1$

素因数の和:505

約数の個数: 32

約数和(自身を含む): 27509760

約数和(自身を除く): 8848775

約数列:

[1, 5, 7, 17, 35, 79, 85, 119, 395, 397, 553, 595, 1343, 1985, 2765, 2779, 6715, 6749, 9401, 13895, 31363, 33745, 47005, 47243, 156815, 219541, 236215, 533171, 1097705, 2665855, 3732197, 18660985]

約数ペア:

[(1, 18660985), (5, 3732197), (7, 2665855), (17, 1097705), (35, 533171), (79, 236215), (85, 219541), (119, 156815), (395, 47243), (397, 47005), (553, 33745), (595, 31363), (1343, 13895), (1985, 9401), (2765, 6749), (2779, 6715)]