20397952

素因数分解:

$2^7\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1$

素因数の和:183

約数の個数: 64

約数和(自身を含む): 43023600

約数和(自身を除く): 22625648

約数列:

[1, 2, 4, 8, 16, 32, 37, 59, 64, 73, 74, 118, 128, 146, 148, 236, 292, 296, 472, 584, 592, 944, 1168, 1184, 1888, 2183, 2336, 2368, 2701, 3776, 4307, 4366, 4672, 4736, 5402, 7552, 8614, 8732, 9344, 10804, 17228, 17464, 21608, 34456, 34928, 43216, 68912, 69856, 86432, 137824, 139712, 159359, 172864, 275648, 279424, 318718, 345728, 551296, 637436, 1274872, 2549744, 5099488, 10198976, 20397952]

約数ペア:

[(1, 20397952), (2, 10198976), (4, 5099488), (8, 2549744), (16, 1274872), (32, 637436), (37, 551296), (59, 345728), (64, 318718), (73, 279424), (74, 275648), (118, 172864), (128, 159359), (146, 139712), (148, 137824), (236, 86432), (292, 69856), (296, 68912), (472, 43216), (584, 34928), (592, 34456), (944, 21608), (1168, 17464), (1184, 17228), (1888, 10804), (2183, 9344), (2336, 8732), (2368, 8614), (2701, 7552), (3776, 5402), (4307, 4736), (4366, 4672)]