18508974

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:265

約数の個数: 64

約数和(自身を含む): 42923520

約数和(自身を除く): 24414546

約数列:

[1, 2, 3, 6, 11, 22, 23, 33, 46, 66, 69, 89, 137, 138, 178, 253, 267, 274, 411, 506, 534, 759, 822, 979, 1507, 1518, 1958, 2047, 2937, 3014, 3151, 4094, 4521, 5874, 6141, 6302, 9042, 9453, 12193, 12282, 18906, 22517, 24386, 34661, 36579, 45034, 67551, 69322, 73158, 103983, 134123, 135102, 207966, 268246, 280439, 402369, 560878, 804738, 841317, 1682634, 3084829, 6169658, 9254487, 18508974]

約数ペア:

[(1, 18508974), (2, 9254487), (3, 6169658), (6, 3084829), (11, 1682634), (22, 841317), (23, 804738), (33, 560878), (46, 402369), (66, 280439), (69, 268246), (89, 207966), (137, 135102), (138, 134123), (178, 103983), (253, 73158), (267, 69322), (274, 67551), (411, 45034), (506, 36579), (534, 34661), (759, 24386), (822, 22517), (979, 18906), (1507, 12282), (1518, 12193), (1958, 9453), (2047, 9042), (2937, 6302), (3014, 6141), (3151, 5874), (4094, 4521)]