21507678

素因数分解:

$2^1\times 3^2\times {\mathrm{977}}^1\times {\mathrm{1223}}^1$

素因数の和:2208

約数の個数: 24

約数和(自身を含む): 46685808

約数和(自身を除く): 25178130

約数列:

[1, 2, 3, 6, 9, 18, 977, 1223, 1954, 2446, 2931, 3669, 5862, 7338, 8793, 11007, 17586, 22014, 1194871, 2389742, 3584613, 7169226, 10753839, 21507678]

約数ペア:

[(1, 21507678), (2, 10753839), (3, 7169226), (6, 3584613), (9, 2389742), (18, 1194871), (977, 22014), (1223, 17586), (1954, 11007), (2446, 8793), (2931, 7338), (3669, 5862)]