17920640

素因数分解:

$2^7\times 5^1\times {\mathrm{28001}}^1$

素因数の和:28020

約数の個数: 32

約数和(自身を含む): 42843060

約数和(自身を除く): 24922420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 28001, 56002, 112004, 140005, 224008, 280010, 448016, 560020, 896032, 1120040, 1792064, 2240080, 3584128, 4480160, 8960320, 17920640]

約数ペア:

[(1, 17920640), (2, 8960320), (4, 4480160), (5, 3584128), (8, 2240080), (10, 1792064), (16, 1120040), (20, 896032), (32, 560020), (40, 448016), (64, 280010), (80, 224008), (128, 140005), (160, 112004), (320, 56002), (640, 28001)]