18616936

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:266

約数の個数: 64

約数和(自身を含む): 40360320

約数和(自身を除く): 21743384

約数列:

[1, 2, 4, 8, 13, 23, 26, 43, 46, 52, 86, 92, 104, 172, 181, 184, 299, 344, 362, 559, 598, 724, 989, 1118, 1196, 1448, 1978, 2236, 2353, 2392, 3956, 4163, 4472, 4706, 7783, 7912, 8326, 9412, 12857, 15566, 16652, 18824, 25714, 31132, 33304, 51428, 54119, 62264, 101179, 102856, 108238, 179009, 202358, 216476, 358018, 404716, 432952, 716036, 809432, 1432072, 2327117, 4654234, 9308468, 18616936]

約数ペア:

[(1, 18616936), (2, 9308468), (4, 4654234), (8, 2327117), (13, 1432072), (23, 809432), (26, 716036), (43, 432952), (46, 404716), (52, 358018), (86, 216476), (92, 202358), (104, 179009), (172, 108238), (181, 102856), (184, 101179), (299, 62264), (344, 54119), (362, 51428), (559, 33304), (598, 31132), (724, 25714), (989, 18824), (1118, 16652), (1196, 15566), (1448, 12857), (1978, 9412), (2236, 8326), (2353, 7912), (2392, 7783), (3956, 4706), (4163, 4472)]