18679648

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{541}}^1$

素因数の和:647

約数の個数: 48

約数和(自身を含む): 40155696

約数和(自身を除く): 21476048

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 83, 104, 166, 208, 332, 416, 541, 664, 1079, 1082, 1328, 2158, 2164, 2656, 4316, 4328, 7033, 8632, 8656, 14066, 17264, 17312, 28132, 34528, 44903, 56264, 89806, 112528, 179612, 225056, 359224, 583739, 718448, 1167478, 1436896, 2334956, 4669912, 9339824, 18679648]

約数ペア:

[(1, 18679648), (2, 9339824), (4, 4669912), (8, 2334956), (13, 1436896), (16, 1167478), (26, 718448), (32, 583739), (52, 359224), (83, 225056), (104, 179612), (166, 112528), (208, 89806), (332, 56264), (416, 44903), (541, 34528), (664, 28132), (1079, 17312), (1082, 17264), (1328, 14066), (2158, 8656), (2164, 8632), (2656, 7033), (4316, 4328)]