21883155

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1567}}^1$

素因数の和:1608

約数の個数: 48

約数和(自身を含む): 42900480

約数和(自身を除く): 21017325

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 49, 57, 95, 105, 133, 147, 245, 285, 399, 665, 735, 931, 1567, 1995, 2793, 4655, 4701, 7835, 10969, 13965, 23505, 29773, 32907, 54845, 76783, 89319, 148865, 164535, 208411, 230349, 383915, 446595, 625233, 1042055, 1151745, 1458877, 3126165, 4376631, 7294385, 21883155]

約数ペア:

[(1, 21883155), (3, 7294385), (5, 4376631), (7, 3126165), (15, 1458877), (19, 1151745), (21, 1042055), (35, 625233), (49, 446595), (57, 383915), (95, 230349), (105, 208411), (133, 164535), (147, 148865), (245, 89319), (285, 76783), (399, 54845), (665, 32907), (735, 29773), (931, 23505), (1567, 13965), (1995, 10969), (2793, 7835), (4655, 4701)]