19718015

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{5531}}^1$

素因数の和:5590

約数の個数: 16

約数和(自身を含む): 25491456

約数和(自身を除く): 5773441

約数列:

[1, 5, 23, 31, 115, 155, 713, 3565, 5531, 27655, 127213, 171461, 636065, 857305, 3943603, 19718015]

約数ペア:

[(1, 19718015), (5, 3943603), (23, 857305), (31, 636065), (115, 171461), (155, 127213), (713, 27655), (3565, 5531)]