21062260

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1289}}^1$

素因数の和:1360

約数の個数: 48

約数和(自身を含む): 47678400

約数和(自身を除く): 26616140

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 86, 95, 172, 190, 215, 380, 430, 817, 860, 1289, 1634, 2578, 3268, 4085, 5156, 6445, 8170, 12890, 16340, 24491, 25780, 48982, 55427, 97964, 110854, 122455, 221708, 244910, 277135, 489820, 554270, 1053113, 1108540, 2106226, 4212452, 5265565, 10531130, 21062260]

約数ペア:

[(1, 21062260), (2, 10531130), (4, 5265565), (5, 4212452), (10, 2106226), (19, 1108540), (20, 1053113), (38, 554270), (43, 489820), (76, 277135), (86, 244910), (95, 221708), (172, 122455), (190, 110854), (215, 97964), (380, 55427), (430, 48982), (817, 25780), (860, 24491), (1289, 16340), (1634, 12890), (2578, 8170), (3268, 6445), (4085, 5156)]