21133808

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{1231}}^1$

素因数の和:1305

約数の個数: 40

約数和(自身を含む): 43538880

約数和(自身を除く): 22405072

約数列:

[1, 2, 4, 8, 16, 29, 37, 58, 74, 116, 148, 232, 296, 464, 592, 1073, 1231, 2146, 2462, 4292, 4924, 8584, 9848, 17168, 19696, 35699, 45547, 71398, 91094, 142796, 182188, 285592, 364376, 571184, 728752, 1320863, 2641726, 5283452, 10566904, 21133808]

約数ペア:

[(1, 21133808), (2, 10566904), (4, 5283452), (8, 2641726), (16, 1320863), (29, 728752), (37, 571184), (58, 364376), (74, 285592), (116, 182188), (148, 142796), (232, 91094), (296, 71398), (464, 45547), (592, 35699), (1073, 19696), (1231, 17168), (2146, 9848), (2462, 8584), (4292, 4924)]