89191040

素因数分解:

$2^7\times 5^1\times {\mathrm{139361}}^1$

素因数の和:139380

約数の個数: 32

約数和(自身を含む): 213223860

約数和(自身を除く): 124032820

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 139361, 278722, 557444, 696805, 1114888, 1393610, 2229776, 2787220, 4459552, 5574440, 8919104, 11148880, 17838208, 22297760, 44595520, 89191040]

約数ペア:

[(1, 89191040), (2, 44595520), (4, 22297760), (5, 17838208), (8, 11148880), (10, 8919104), (16, 5574440), (20, 4459552), (32, 2787220), (40, 2229776), (64, 1393610), (80, 1114888), (128, 696805), (160, 557444), (320, 278722), (640, 139361)]