20355678

素因数分解:

$2^1\times 3^3\times 7^4\times {\mathrm{157}}^1$

素因数の和:196

約数の個数: 80

約数和(自身を含む): 53106960

約数和(自身を除く): 32751282

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 49, 54, 63, 98, 126, 147, 157, 189, 294, 314, 343, 378, 441, 471, 686, 882, 942, 1029, 1099, 1323, 1413, 2058, 2198, 2401, 2646, 2826, 3087, 3297, 4239, 4802, 6174, 6594, 7203, 7693, 8478, 9261, 9891, 14406, 15386, 18522, 19782, 21609, 23079, 29673, 43218, 46158, 53851, 59346, 64827, 69237, 107702, 129654, 138474, 161553, 207711, 323106, 376957, 415422, 484659, 753914, 969318, 1130871, 1453977, 2261742, 2907954, 3392613, 6785226, 10177839, 20355678]

約数ペア:

[(1, 20355678), (2, 10177839), (3, 6785226), (6, 3392613), (7, 2907954), (9, 2261742), (14, 1453977), (18, 1130871), (21, 969318), (27, 753914), (42, 484659), (49, 415422), (54, 376957), (63, 323106), (98, 207711), (126, 161553), (147, 138474), (157, 129654), (189, 107702), (294, 69237), (314, 64827), (343, 59346), (378, 53851), (441, 46158), (471, 43218), (686, 29673), (882, 23079), (942, 21609), (1029, 19782), (1099, 18522), (1323, 15386), (1413, 14406), (2058, 9891), (2198, 9261), (2401, 8478), (2646, 7693), (2826, 7203), (3087, 6594), (3297, 6174), (4239, 4802)]