21980568

素因数分解:

$2^3\times 3^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:149

約数の個数: 96

約数和(自身を含む): 60350400

約数和(自身を除く): 38369832

約数列:

[1, 2, 3, 4, 6, 8, 12, 19, 24, 38, 43, 57, 59, 76, 86, 114, 118, 129, 152, 172, 177, 228, 236, 258, 344, 354, 361, 456, 472, 516, 708, 722, 817, 1032, 1083, 1121, 1416, 1444, 1634, 2166, 2242, 2451, 2537, 2888, 3268, 3363, 4332, 4484, 4902, 5074, 6536, 6726, 7611, 8664, 8968, 9804, 10148, 13452, 15222, 15523, 19608, 20296, 21299, 26904, 30444, 31046, 42598, 46569, 48203, 60888, 62092, 63897, 85196, 93138, 96406, 124184, 127794, 144609, 170392, 186276, 192812, 255588, 289218, 372552, 385624, 511176, 578436, 915857, 1156872, 1831714, 2747571, 3663428, 5495142, 7326856, 10990284, 21980568]

約数ペア:

[(1, 21980568), (2, 10990284), (3, 7326856), (4, 5495142), (6, 3663428), (8, 2747571), (12, 1831714), (19, 1156872), (24, 915857), (38, 578436), (43, 511176), (57, 385624), (59, 372552), (76, 289218), (86, 255588), (114, 192812), (118, 186276), (129, 170392), (152, 144609), (172, 127794), (177, 124184), (228, 96406), (236, 93138), (258, 85196), (344, 63897), (354, 62092), (361, 60888), (456, 48203), (472, 46569), (516, 42598), (708, 31046), (722, 30444), (817, 26904), (1032, 21299), (1083, 20296), (1121, 19608), (1416, 15523), (1444, 15222), (1634, 13452), (2166, 10148), (2242, 9804), (2451, 8968), (2537, 8664), (2888, 7611), (3268, 6726), (3363, 6536), (4332, 5074), (4484, 4902)]