19816255

素因数分解:

$5^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1\times {\mathrm{397}}^1$

素因数の和:618

約数の個数: 16

約数和(自身を含む): 24357600

約数和(自身を除く): 4541345

約数列:

[1, 5, 67, 149, 335, 397, 745, 1985, 9983, 26599, 49915, 59153, 132995, 295765, 3963251, 19816255]

約数ペア:

[(1, 19816255), (5, 3963251), (67, 295765), (149, 132995), (335, 59153), (397, 49915), (745, 26599), (1985, 9983)]