221368428

素因数分解:

$2^2\times 3^2\times {\mathrm{79}}^1\times {\mathrm{277}}^1\times {\mathrm{281}}^1$

素因数の和:647

約数の個数: 72

約数和(自身を含む): 570722880

約数和(自身を除く): 349354452

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 79, 158, 237, 277, 281, 316, 474, 554, 562, 711, 831, 843, 948, 1108, 1124, 1422, 1662, 1686, 2493, 2529, 2844, 3324, 3372, 4986, 5058, 9972, 10116, 21883, 22199, 43766, 44398, 65649, 66597, 77837, 87532, 88796, 131298, 133194, 155674, 196947, 199791, 233511, 262596, 266388, 311348, 393894, 399582, 467022, 700533, 787788, 799164, 934044, 1401066, 2802132, 6149123, 12298246, 18447369, 24596492, 36894738, 55342107, 73789476, 110684214, 221368428]

約数ペア:

[(1, 221368428), (2, 110684214), (3, 73789476), (4, 55342107), (6, 36894738), (9, 24596492), (12, 18447369), (18, 12298246), (36, 6149123), (79, 2802132), (158, 1401066), (237, 934044), (277, 799164), (281, 787788), (316, 700533), (474, 467022), (554, 399582), (562, 393894), (711, 311348), (831, 266388), (843, 262596), (948, 233511), (1108, 199791), (1124, 196947), (1422, 155674), (1662, 133194), (1686, 131298), (2493, 88796), (2529, 87532), (2844, 77837), (3324, 66597), (3372, 65649), (4986, 44398), (5058, 43766), (9972, 22199), (10116, 21883)]