21666880

素因数分解:

$2^6\times 5^1\times {\mathrm{67709}}^1$

素因数の和:67726

約数の個数: 28

約数和(自身を含む): 51595020

約数和(自身を除く): 29928140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 67709, 135418, 270836, 338545, 541672, 677090, 1083344, 1354180, 2166688, 2708360, 4333376, 5416720, 10833440, 21666880]

約数ペア:

[(1, 21666880), (2, 10833440), (4, 5416720), (5, 4333376), (8, 2708360), (10, 2166688), (16, 1354180), (20, 1083344), (32, 677090), (40, 541672), (64, 338545), (80, 270836), (160, 135418), (320, 67709)]