21425696

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{677}}^1$

素因数の和:753

約数の個数: 48

約数和(自身を含む): 45105984

約数和(自身を除く): 23680288

約数列:

[1, 2, 4, 8, 16, 23, 32, 43, 46, 86, 92, 172, 184, 344, 368, 677, 688, 736, 989, 1354, 1376, 1978, 2708, 3956, 5416, 7912, 10832, 15571, 15824, 21664, 29111, 31142, 31648, 58222, 62284, 116444, 124568, 232888, 249136, 465776, 498272, 669553, 931552, 1339106, 2678212, 5356424, 10712848, 21425696]

約数ペア:

[(1, 21425696), (2, 10712848), (4, 5356424), (8, 2678212), (16, 1339106), (23, 931552), (32, 669553), (43, 498272), (46, 465776), (86, 249136), (92, 232888), (172, 124568), (184, 116444), (344, 62284), (368, 58222), (677, 31648), (688, 31142), (736, 29111), (989, 21664), (1354, 15824), (1376, 15571), (1978, 10832), (2708, 7912), (3956, 5416)]