21905936

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{241}}^1$

素因数の和:304

約数の個数: 80

約数和(自身を含む): 50413440

約数和(自身を除く): 28507504

約数列:

[1, 2, 4, 8, 13, 16, 19, 23, 26, 38, 46, 52, 76, 92, 104, 152, 184, 208, 241, 247, 299, 304, 368, 437, 482, 494, 598, 874, 964, 988, 1196, 1748, 1928, 1976, 2392, 3133, 3496, 3856, 3952, 4579, 4784, 5543, 5681, 6266, 6992, 9158, 11086, 11362, 12532, 18316, 22172, 22724, 25064, 36632, 44344, 45448, 50128, 59527, 72059, 73264, 88688, 90896, 105317, 119054, 144118, 210634, 238108, 288236, 421268, 476216, 576472, 842536, 952432, 1152944, 1369121, 1685072, 2738242, 5476484, 10952968, 21905936]

約数ペア:

[(1, 21905936), (2, 10952968), (4, 5476484), (8, 2738242), (13, 1685072), (16, 1369121), (19, 1152944), (23, 952432), (26, 842536), (38, 576472), (46, 476216), (52, 421268), (76, 288236), (92, 238108), (104, 210634), (152, 144118), (184, 119054), (208, 105317), (241, 90896), (247, 88688), (299, 73264), (304, 72059), (368, 59527), (437, 50128), (482, 45448), (494, 44344), (598, 36632), (874, 25064), (964, 22724), (988, 22172), (1196, 18316), (1748, 12532), (1928, 11362), (1976, 11086), (2392, 9158), (3133, 6992), (3496, 6266), (3856, 5681), (3952, 5543), (4579, 4784)]