21377419

素因数分解:

$7^1\times {\mathrm{23}}^3\times {\mathrm{251}}^1$

素因数の和:327

約数の個数: 16

約数和(自身を含む): 25643520

約数和(自身を除く): 4266101

約数列:

[1, 7, 23, 161, 251, 529, 1757, 3703, 5773, 12167, 40411, 85169, 132779, 929453, 3053917, 21377419]

約数ペア:

[(1, 21377419), (7, 3053917), (23, 929453), (161, 132779), (251, 85169), (529, 40411), (1757, 12167), (3703, 5773)]