21490854

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{257}}^1$

素因数の和:461

約数の個数: 64

約数和(自身を含む): 54093312

約数和(自身を除く): 32602458

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 77, 154, 181, 231, 257, 362, 462, 514, 543, 771, 1086, 1267, 1542, 1799, 1991, 2534, 2827, 3598, 3801, 3982, 5397, 5654, 5973, 7602, 8481, 10794, 11946, 13937, 16962, 19789, 27874, 39578, 41811, 46517, 59367, 83622, 93034, 118734, 139551, 279102, 325619, 511687, 651238, 976857, 1023374, 1535061, 1953714, 3070122, 3581809, 7163618, 10745427, 21490854]

約数ペア:

[(1, 21490854), (2, 10745427), (3, 7163618), (6, 3581809), (7, 3070122), (11, 1953714), (14, 1535061), (21, 1023374), (22, 976857), (33, 651238), (42, 511687), (66, 325619), (77, 279102), (154, 139551), (181, 118734), (231, 93034), (257, 83622), (362, 59367), (462, 46517), (514, 41811), (543, 39578), (771, 27874), (1086, 19789), (1267, 16962), (1542, 13937), (1799, 11946), (1991, 10794), (2534, 8481), (2827, 7602), (3598, 5973), (3801, 5654), (3982, 5397)]