19997804158

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{677}}^1\times {\mathrm{642149}}^1$

素因数の和:642851

約数の個数: 16

約数和(自身を含む): 31347194400

約数和(自身を除く): 11349390242

約数列:

[1, 2, 23, 46, 677, 1354, 15571, 31142, 642149, 1284298, 14769427, 29538854, 434734873, 869469746, 9998902079, 19997804158]

約数ペア:

[(1, 19997804158), (2, 9998902079), (23, 869469746), (46, 434734873), (677, 29538854), (1354, 14769427), (15571, 1284298), (31142, 642149)]