87207880

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{30707}}^1$

素因数の和:30789

約数の個数: 32

約数和(自身を含む): 198987840

約数和(自身を除く): 111779960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 30707, 61414, 122828, 153535, 245656, 307070, 614140, 1228280, 2180197, 4360394, 8720788, 10900985, 17441576, 21801970, 43603940, 87207880]

約数ペア:

[(1, 87207880), (2, 43603940), (4, 21801970), (5, 17441576), (8, 10900985), (10, 8720788), (20, 4360394), (40, 2180197), (71, 1228280), (142, 614140), (284, 307070), (355, 245656), (568, 153535), (710, 122828), (1420, 61414), (2840, 30707)]