399013610

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{19379}}^1$

素因数の和:19486

約数の個数: 32

約数和(自身を含む): 753494400

約数和(自身を除く): 354480790

約数列:

[1, 2, 5, 10, 29, 58, 71, 142, 145, 290, 355, 710, 2059, 4118, 10295, 19379, 20590, 38758, 96895, 193790, 561991, 1123982, 1375909, 2751818, 2809955, 5619910, 6879545, 13759090, 39901361, 79802722, 199506805, 399013610]

約数ペア:

[(1, 399013610), (2, 199506805), (5, 79802722), (10, 39901361), (29, 13759090), (58, 6879545), (71, 5619910), (142, 2809955), (145, 2751818), (290, 1375909), (355, 1123982), (710, 561991), (2059, 193790), (4118, 96895), (10295, 38758), (19379, 20590)]