20306560

素因数分解:

$2^7\times 5^1\times {\mathrm{31729}}^1$

素因数の和:31748

約数の個数: 32

約数和(自身を含む): 48546900

約数和(自身を除く): 28240340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 31729, 63458, 126916, 158645, 253832, 317290, 507664, 634580, 1015328, 1269160, 2030656, 2538320, 4061312, 5076640, 10153280, 20306560]

約数ペア:

[(1, 20306560), (2, 10153280), (4, 5076640), (5, 4061312), (8, 2538320), (10, 2030656), (16, 1269160), (20, 1015328), (32, 634580), (40, 507664), (64, 317290), (80, 253832), (128, 158645), (160, 126916), (320, 63458), (640, 31729)]