66819376

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{321247}}^1$

素因数の和:321268

約数の個数: 20

約数和(自身を含む): 139421632

約数和(自身を除く): 72602256

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 321247, 642494, 1284988, 2569976, 4176211, 5139952, 8352422, 16704844, 33409688, 66819376]

約数ペア:

[(1, 66819376), (2, 33409688), (4, 16704844), (8, 8352422), (13, 5139952), (16, 4176211), (26, 2569976), (52, 1284988), (104, 642494), (208, 321247)]