21577744

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{397}}^1$

素因数の和:527

約数の個数: 40

約数和(自身を含む): 43429760

約数和(自身を除く): 21852016

約数列:

[1, 2, 4, 8, 16, 43, 79, 86, 158, 172, 316, 344, 397, 632, 688, 794, 1264, 1588, 3176, 3397, 6352, 6794, 13588, 17071, 27176, 31363, 34142, 54352, 62726, 68284, 125452, 136568, 250904, 273136, 501808, 1348609, 2697218, 5394436, 10788872, 21577744]

約数ペア:

[(1, 21577744), (2, 10788872), (4, 5394436), (8, 2697218), (16, 1348609), (43, 501808), (79, 273136), (86, 250904), (158, 136568), (172, 125452), (316, 68284), (344, 62726), (397, 54352), (632, 34142), (688, 31363), (794, 27176), (1264, 17071), (1588, 13588), (3176, 6794), (3397, 6352)]