21913866

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1319}}^1$

素因数の和:1411

約数の個数: 48

約数和(自身を含む): 51891840

約数和(自身を除く): 29977974

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 71, 78, 117, 142, 213, 234, 426, 639, 923, 1278, 1319, 1846, 2638, 2769, 3957, 5538, 7914, 8307, 11871, 16614, 17147, 23742, 34294, 51441, 93649, 102882, 154323, 187298, 280947, 308646, 561894, 842841, 1217437, 1685682, 2434874, 3652311, 7304622, 10956933, 21913866]

約数ペア:

[(1, 21913866), (2, 10956933), (3, 7304622), (6, 3652311), (9, 2434874), (13, 1685682), (18, 1217437), (26, 842841), (39, 561894), (71, 308646), (78, 280947), (117, 187298), (142, 154323), (213, 102882), (234, 93649), (426, 51441), (639, 34294), (923, 23742), (1278, 17147), (1319, 16614), (1846, 11871), (2638, 8307), (2769, 7914), (3957, 5538)]