21859838

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{179}}^1$

素因数の和:273

約数の個数: 64

約数和(自身を含む): 44997120

約数和(自身を除く): 23137282

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 61, 77, 91, 122, 143, 154, 179, 182, 286, 358, 427, 671, 793, 854, 1001, 1253, 1342, 1586, 1969, 2002, 2327, 2506, 3938, 4654, 4697, 5551, 8723, 9394, 10919, 11102, 13783, 16289, 17446, 21838, 25597, 27566, 32578, 51194, 61061, 76433, 120109, 122122, 141947, 152866, 179179, 240218, 283894, 358358, 840763, 993629, 1561417, 1681526, 1987258, 3122834, 10929919, 21859838]

約数ペア:

[(1, 21859838), (2, 10929919), (7, 3122834), (11, 1987258), (13, 1681526), (14, 1561417), (22, 993629), (26, 840763), (61, 358358), (77, 283894), (91, 240218), (122, 179179), (143, 152866), (154, 141947), (179, 122122), (182, 120109), (286, 76433), (358, 61061), (427, 51194), (671, 32578), (793, 27566), (854, 25597), (1001, 21838), (1253, 17446), (1342, 16289), (1586, 13783), (1969, 11102), (2002, 10919), (2327, 9394), (2506, 8723), (3938, 5551), (4654, 4697)]