90081520

素因数分解:

$2^4\times 5^1\times {\mathrm{523}}^1\times {\mathrm{2153}}^1$

素因数の和:2689

約数の個数: 40

約数和(自身を含む): 209937456

約数和(自身を除く): 119855936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 523, 1046, 2092, 2153, 2615, 4184, 4306, 5230, 8368, 8612, 10460, 10765, 17224, 20920, 21530, 34448, 41840, 43060, 86120, 172240, 1126019, 2252038, 4504076, 5630095, 9008152, 11260190, 18016304, 22520380, 45040760, 90081520]

約数ペア:

[(1, 90081520), (2, 45040760), (4, 22520380), (5, 18016304), (8, 11260190), (10, 9008152), (16, 5630095), (20, 4504076), (40, 2252038), (80, 1126019), (523, 172240), (1046, 86120), (2092, 43060), (2153, 41840), (2615, 34448), (4184, 21530), (4306, 20920), (5230, 17224), (8368, 10765), (8612, 10460)]