21915810

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{809}}^1$

素因数の和:872

約数の個数: 96

約数和(自身を含む): 66718080

約数和(自身を除く): 44802270

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 43, 45, 63, 70, 86, 90, 105, 126, 129, 210, 215, 258, 301, 315, 387, 430, 602, 630, 645, 774, 809, 903, 1290, 1505, 1618, 1806, 1935, 2427, 2709, 3010, 3870, 4045, 4515, 4854, 5418, 5663, 7281, 8090, 9030, 11326, 12135, 13545, 14562, 16989, 24270, 27090, 28315, 33978, 34787, 36405, 50967, 56630, 69574, 72810, 84945, 101934, 104361, 169890, 173935, 208722, 243509, 254835, 313083, 347870, 487018, 509670, 521805, 626166, 730527, 1043610, 1217545, 1461054, 1565415, 2191581, 2435090, 3130830, 3652635, 4383162, 7305270, 10957905, 21915810]

約数ペア:

[(1, 21915810), (2, 10957905), (3, 7305270), (5, 4383162), (6, 3652635), (7, 3130830), (9, 2435090), (10, 2191581), (14, 1565415), (15, 1461054), (18, 1217545), (21, 1043610), (30, 730527), (35, 626166), (42, 521805), (43, 509670), (45, 487018), (63, 347870), (70, 313083), (86, 254835), (90, 243509), (105, 208722), (126, 173935), (129, 169890), (210, 104361), (215, 101934), (258, 84945), (301, 72810), (315, 69574), (387, 56630), (430, 50967), (602, 36405), (630, 34787), (645, 33978), (774, 28315), (809, 27090), (903, 24270), (1290, 16989), (1505, 14562), (1618, 13545), (1806, 12135), (1935, 11326), (2427, 9030), (2709, 8090), (3010, 7281), (3870, 5663), (4045, 5418), (4515, 4854)]