21805308

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{28843}}^1$

素因数の和:28863

約数の個数: 48

約数和(自身を含む): 64610560

約数和(自身を除く): 42805252

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 189, 252, 378, 756, 28843, 57686, 86529, 115372, 173058, 201901, 259587, 346116, 403802, 519174, 605703, 778761, 807604, 1038348, 1211406, 1557522, 1817109, 2422812, 3115044, 3634218, 5451327, 7268436, 10902654, 21805308]

約数ペア:

[(1, 21805308), (2, 10902654), (3, 7268436), (4, 5451327), (6, 3634218), (7, 3115044), (9, 2422812), (12, 1817109), (14, 1557522), (18, 1211406), (21, 1038348), (27, 807604), (28, 778761), (36, 605703), (42, 519174), (54, 403802), (63, 346116), (84, 259587), (108, 201901), (126, 173058), (189, 115372), (252, 86529), (378, 57686), (756, 28843)]