21919380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{52189}}^1$

素因数の和:52208

約数の個数: 48

約数和(自身を含む): 70143360

約数和(自身を除く): 48223980

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 52189, 104378, 156567, 208756, 260945, 313134, 365323, 521890, 626268, 730646, 782835, 1043780, 1095969, 1461292, 1565670, 1826615, 2191938, 3131340, 3653230, 4383876, 5479845, 7306460, 10959690, 21919380]

約数ペア:

[(1, 21919380), (2, 10959690), (3, 7306460), (4, 5479845), (5, 4383876), (6, 3653230), (7, 3131340), (10, 2191938), (12, 1826615), (14, 1565670), (15, 1461292), (20, 1095969), (21, 1043780), (28, 782835), (30, 730646), (35, 626268), (42, 521890), (60, 365323), (70, 313134), (84, 260945), (105, 208756), (140, 156567), (210, 104378), (420, 52189)]