17945405

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{191}}^1$

素因数の和:281

約数の個数: 32

約数和(自身を含む): 24330240

約数和(自身を除く): 6384835

約数列:

[1, 5, 19, 23, 43, 95, 115, 191, 215, 437, 817, 955, 989, 2185, 3629, 4085, 4393, 4945, 8213, 18145, 18791, 21965, 41065, 83467, 93955, 156047, 188899, 417335, 780235, 944495, 3589081, 17945405]

約数ペア:

[(1, 17945405), (5, 3589081), (19, 944495), (23, 780235), (43, 417335), (95, 188899), (115, 156047), (191, 93955), (215, 83467), (437, 41065), (817, 21965), (955, 18791), (989, 18145), (2185, 8213), (3629, 4945), (4085, 4393)]