90545680

素因数分解:

$2^4\times 5^1\times {\mathrm{1131821}}^1$

素因数の和:1131834

約数の個数: 20

約数和(自身を含む): 210518892

約数和(自身を除く): 119973212

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1131821, 2263642, 4527284, 5659105, 9054568, 11318210, 18109136, 22636420, 45272840, 90545680]

約数ペア:

[(1, 90545680), (2, 45272840), (4, 22636420), (5, 18109136), (8, 11318210), (10, 9054568), (16, 5659105), (20, 4527284), (40, 2263642), (80, 1131821)]