21938084

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:217

約数の個数: 72

約数和(自身を含む): 48454560

約数和(自身を除く): 26516476

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 43, 49, 76, 86, 98, 133, 137, 172, 196, 266, 274, 301, 532, 548, 602, 817, 931, 959, 1204, 1634, 1862, 1918, 2107, 2603, 3268, 3724, 3836, 4214, 5206, 5719, 5891, 6713, 8428, 10412, 11438, 11782, 13426, 18221, 22876, 23564, 26852, 36442, 40033, 41237, 72884, 80066, 82474, 111929, 127547, 160132, 164948, 223858, 255094, 288659, 447716, 510188, 577318, 783503, 1154636, 1567006, 3134012, 5484521, 10969042, 21938084]

約数ペア:

[(1, 21938084), (2, 10969042), (4, 5484521), (7, 3134012), (14, 1567006), (19, 1154636), (28, 783503), (38, 577318), (43, 510188), (49, 447716), (76, 288659), (86, 255094), (98, 223858), (133, 164948), (137, 160132), (172, 127547), (196, 111929), (266, 82474), (274, 80066), (301, 72884), (532, 41237), (548, 40033), (602, 36442), (817, 26852), (931, 23564), (959, 22876), (1204, 18221), (1634, 13426), (1862, 11782), (1918, 11438), (2107, 10412), (2603, 8428), (3268, 6713), (3724, 5891), (3836, 5719), (4214, 5206)]