21976720

素因数分解:

$2^4\times 5^1\times {\mathrm{274709}}^1$

素因数の和:274722

約数の個数: 20

約数和(自身を含む): 51096060

約数和(自身を除く): 29119340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 274709, 549418, 1098836, 1373545, 2197672, 2747090, 4395344, 5494180, 10988360, 21976720]

約数ペア:

[(1, 21976720), (2, 10988360), (4, 5494180), (5, 4395344), (8, 2747090), (10, 2197672), (16, 1373545), (20, 1098836), (40, 549418), (80, 274709)]