20203869

素因数分解:

$3^1\times 7^1\times {\mathrm{647}}^1\times {\mathrm{1487}}^1$

素因数の和:2144

約数の個数: 16

約数和(自身を含む): 30855168

約数和(自身を除く): 10651299

約数列:

[1, 3, 7, 21, 647, 1487, 1941, 4461, 4529, 10409, 13587, 31227, 962089, 2886267, 6734623, 20203869]

約数ペア:

[(1, 20203869), (3, 6734623), (7, 2886267), (21, 962089), (647, 31227), (1487, 13587), (1941, 10409), (4461, 4529)]