19999144

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{241}}^1$

素因数の和:322

約数の個数: 64

約数和(自身を含む): 43908480

約数和(自身を除く): 23909336

約数列:

[1, 2, 4, 8, 11, 22, 23, 41, 44, 46, 82, 88, 92, 164, 184, 241, 253, 328, 451, 482, 506, 902, 943, 964, 1012, 1804, 1886, 1928, 2024, 2651, 3608, 3772, 5302, 5543, 7544, 9881, 10373, 10604, 11086, 19762, 20746, 21208, 22172, 39524, 41492, 44344, 60973, 79048, 82984, 108691, 121946, 217382, 227263, 243892, 434764, 454526, 487784, 869528, 909052, 1818104, 2499893, 4999786, 9999572, 19999144]

約数ペア:

[(1, 19999144), (2, 9999572), (4, 4999786), (8, 2499893), (11, 1818104), (22, 909052), (23, 869528), (41, 487784), (44, 454526), (46, 434764), (82, 243892), (88, 227263), (92, 217382), (164, 121946), (184, 108691), (241, 82984), (253, 79048), (328, 60973), (451, 44344), (482, 41492), (506, 39524), (902, 22172), (943, 21208), (964, 20746), (1012, 19762), (1804, 11086), (1886, 10604), (1928, 10373), (2024, 9881), (2651, 7544), (3608, 5543), (3772, 5302)]