21405654

素因数分解:

$2^1\times 3^3\times {\mathrm{29}}^1\times {\mathrm{13669}}^1$

素因数の和:13709

約数の個数: 32

約数和(自身を含む): 49212000

約数和(自身を除く): 27806346

約数列:

[1, 2, 3, 6, 9, 18, 27, 29, 54, 58, 87, 174, 261, 522, 783, 1566, 13669, 27338, 41007, 82014, 123021, 246042, 369063, 396401, 738126, 792802, 1189203, 2378406, 3567609, 7135218, 10702827, 21405654]

約数ペア:

[(1, 21405654), (2, 10702827), (3, 7135218), (6, 3567609), (9, 2378406), (18, 1189203), (27, 792802), (29, 738126), (54, 396401), (58, 369063), (87, 246042), (174, 123021), (261, 82014), (522, 41007), (783, 27338), (1566, 13669)]