19703915

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{839}}^1$

素因数の和:923

約数の個数: 32

約数和(自身を含む): 29998080

約数和(自身を除く): 10294165

約数列:

[1, 5, 7, 11, 35, 55, 61, 77, 305, 385, 427, 671, 839, 2135, 3355, 4195, 4697, 5873, 9229, 23485, 29365, 46145, 51179, 64603, 255895, 323015, 358253, 562969, 1791265, 2814845, 3940783, 19703915]

約数ペア:

[(1, 19703915), (5, 3940783), (7, 2814845), (11, 1791265), (35, 562969), (55, 358253), (61, 323015), (77, 255895), (305, 64603), (385, 51179), (427, 46145), (671, 29365), (839, 23485), (2135, 9229), (3355, 5873), (4195, 4697)]