21122718

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:237

約数の個数: 64

約数和(自身を含む): 47308800

約数和(自身を除く): 26186082

約数列:

[1, 2, 3, 6, 19, 31, 38, 43, 57, 62, 86, 93, 114, 129, 139, 186, 258, 278, 417, 589, 817, 834, 1178, 1333, 1634, 1767, 2451, 2641, 2666, 3534, 3999, 4309, 4902, 5282, 5977, 7923, 7998, 8618, 11954, 12927, 15846, 17931, 25327, 25854, 35862, 50654, 75981, 81871, 113563, 151962, 163742, 185287, 227126, 245613, 340689, 370574, 491226, 555861, 681378, 1111722, 3520453, 7040906, 10561359, 21122718]

約数ペア:

[(1, 21122718), (2, 10561359), (3, 7040906), (6, 3520453), (19, 1111722), (31, 681378), (38, 555861), (43, 491226), (57, 370574), (62, 340689), (86, 245613), (93, 227126), (114, 185287), (129, 163742), (139, 151962), (186, 113563), (258, 81871), (278, 75981), (417, 50654), (589, 35862), (817, 25854), (834, 25327), (1178, 17931), (1333, 15846), (1634, 12927), (1767, 11954), (2451, 8618), (2641, 7998), (2666, 7923), (3534, 5977), (3999, 5282), (4309, 4902)]