21147678

素因数分解:

$2^1\times 3^2\times {\mathrm{181}}^1\times {\mathrm{6491}}^1$

素因数の和:6680

約数の個数: 24

約数和(自身を含む): 46080216

約数和(自身を除く): 24932538

約数列:

[1, 2, 3, 6, 9, 18, 181, 362, 543, 1086, 1629, 3258, 6491, 12982, 19473, 38946, 58419, 116838, 1174871, 2349742, 3524613, 7049226, 10573839, 21147678]

約数ペア:

[(1, 21147678), (2, 10573839), (3, 7049226), (6, 3524613), (9, 2349742), (18, 1174871), (181, 116838), (362, 58419), (543, 38946), (1086, 19473), (1629, 12982), (3258, 6491)]