211816720

素因数分解:

$2^4\times 5^1\times {\mathrm{2647709}}^1$

素因数の和:2647722

約数の個数: 20

約数和(自身を含む): 492474060

約数和(自身を除く): 280657340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2647709, 5295418, 10590836, 13238545, 21181672, 26477090, 42363344, 52954180, 105908360, 211816720]

約数ペア:

[(1, 211816720), (2, 105908360), (4, 52954180), (5, 42363344), (8, 26477090), (10, 21181672), (16, 13238545), (20, 10590836), (40, 5295418), (80, 2647709)]