21721038

素因数分解:

$2^1\times 3^1\times {\mathrm{251}}^1\times {\mathrm{14423}}^1$

素因数の和:14679

約数の個数: 16

約数和(自身を含む): 43618176

約数和(自身を除く): 21897138

約数列:

[1, 2, 3, 6, 251, 502, 753, 1506, 14423, 28846, 43269, 86538, 3620173, 7240346, 10860519, 21721038]

約数ペア:

[(1, 21721038), (2, 10860519), (3, 7240346), (6, 3620173), (251, 86538), (502, 43269), (753, 28846), (1506, 14423)]