21724144

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1$

素因数の和:302

約数の個数: 80

約数和(自身を含む): 49996800

約数和(自身を除く): 28272656

約数列:

[1, 2, 4, 8, 13, 16, 19, 23, 26, 38, 46, 52, 76, 92, 104, 152, 184, 208, 239, 247, 299, 304, 368, 437, 478, 494, 598, 874, 956, 988, 1196, 1748, 1912, 1976, 2392, 3107, 3496, 3824, 3952, 4541, 4784, 5497, 5681, 6214, 6992, 9082, 10994, 11362, 12428, 18164, 21988, 22724, 24856, 36328, 43976, 45448, 49712, 59033, 71461, 72656, 87952, 90896, 104443, 118066, 142922, 208886, 236132, 285844, 417772, 472264, 571688, 835544, 944528, 1143376, 1357759, 1671088, 2715518, 5431036, 10862072, 21724144]

約数ペア:

[(1, 21724144), (2, 10862072), (4, 5431036), (8, 2715518), (13, 1671088), (16, 1357759), (19, 1143376), (23, 944528), (26, 835544), (38, 571688), (46, 472264), (52, 417772), (76, 285844), (92, 236132), (104, 208886), (152, 142922), (184, 118066), (208, 104443), (239, 90896), (247, 87952), (299, 72656), (304, 71461), (368, 59033), (437, 49712), (478, 45448), (494, 43976), (598, 36328), (874, 24856), (956, 22724), (988, 21988), (1196, 18164), (1748, 12428), (1912, 11362), (1976, 10994), (2392, 9082), (3107, 6992), (3496, 6214), (3824, 5681), (3952, 5497), (4541, 4784)]