21918428

素因数分解:

$2^2\times 7^1\times {\mathrm{613}}^1\times {\mathrm{1277}}^1$

素因数の和:1901

約数の個数: 24

約数和(自身を含む): 43942752

約数和(自身を除く): 22024324

約数列:

[1, 2, 4, 7, 14, 28, 613, 1226, 1277, 2452, 2554, 4291, 5108, 8582, 8939, 17164, 17878, 35756, 782801, 1565602, 3131204, 5479607, 10959214, 21918428]

約数ペア:

[(1, 21918428), (2, 10959214), (4, 5479607), (7, 3131204), (14, 1565602), (28, 782801), (613, 35756), (1226, 17878), (1277, 17164), (2452, 8939), (2554, 8582), (4291, 5108)]