19778335

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{3413}}^1$

素因数の和:3498

約数の個数: 16

約数和(自身を含む): 25400160

約数和(自身を除く): 5621825

約数列:

[1, 5, 19, 61, 95, 305, 1159, 3413, 5795, 17065, 64847, 208193, 324235, 1040965, 3955667, 19778335]

約数ペア:

[(1, 19778335), (5, 3955667), (19, 1040965), (61, 324235), (95, 208193), (305, 64847), (1159, 17065), (3413, 5795)]