18147640

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:269

約数の個数: 96

約数和(自身を含む): 48755520

約数和(自身を除く): 30607880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 47, 49, 56, 70, 94, 98, 140, 188, 196, 197, 235, 245, 280, 329, 376, 392, 394, 470, 490, 658, 788, 940, 980, 985, 1316, 1379, 1576, 1645, 1880, 1960, 1970, 2303, 2632, 2758, 3290, 3940, 4606, 5516, 6580, 6895, 7880, 9212, 9259, 9653, 11032, 11515, 13160, 13790, 18424, 18518, 19306, 23030, 27580, 37036, 38612, 46060, 46295, 48265, 55160, 64813, 74072, 77224, 92120, 92590, 96530, 129626, 185180, 193060, 259252, 324065, 370360, 386120, 453691, 518504, 648130, 907382, 1296260, 1814764, 2268455, 2592520, 3629528, 4536910, 9073820, 18147640]

約数ペア:

[(1, 18147640), (2, 9073820), (4, 4536910), (5, 3629528), (7, 2592520), (8, 2268455), (10, 1814764), (14, 1296260), (20, 907382), (28, 648130), (35, 518504), (40, 453691), (47, 386120), (49, 370360), (56, 324065), (70, 259252), (94, 193060), (98, 185180), (140, 129626), (188, 96530), (196, 92590), (197, 92120), (235, 77224), (245, 74072), (280, 64813), (329, 55160), (376, 48265), (392, 46295), (394, 46060), (470, 38612), (490, 37036), (658, 27580), (788, 23030), (940, 19306), (980, 18518), (985, 18424), (1316, 13790), (1379, 13160), (1576, 11515), (1645, 11032), (1880, 9653), (1960, 9259), (1970, 9212), (2303, 7880), (2632, 6895), (2758, 6580), (3290, 5516), (3940, 4606)]