21222786

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:247

約数の個数: 64

約数和(自身を含む): 48254976

約数和(自身を除く): 27032190

約数列:

[1, 2, 3, 6, 13, 26, 31, 39, 62, 67, 78, 93, 131, 134, 186, 201, 262, 393, 402, 403, 786, 806, 871, 1209, 1703, 1742, 2077, 2418, 2613, 3406, 4061, 4154, 5109, 5226, 6231, 8122, 8777, 10218, 12183, 12462, 17554, 24366, 26331, 27001, 52662, 52793, 54002, 81003, 105586, 114101, 158379, 162006, 228202, 272087, 316758, 342303, 544174, 684606, 816261, 1632522, 3537131, 7074262, 10611393, 21222786]

約数ペア:

[(1, 21222786), (2, 10611393), (3, 7074262), (6, 3537131), (13, 1632522), (26, 816261), (31, 684606), (39, 544174), (62, 342303), (67, 316758), (78, 272087), (93, 228202), (131, 162006), (134, 158379), (186, 114101), (201, 105586), (262, 81003), (393, 54002), (402, 52793), (403, 52662), (786, 27001), (806, 26331), (871, 24366), (1209, 17554), (1703, 12462), (1742, 12183), (2077, 10218), (2418, 8777), (2613, 8122), (3406, 6231), (4061, 5226), (4154, 5109)]