21660156

素因数分解:

$2^2\times 3^3\times 7^2\times {\mathrm{4093}}^1$

素因数の和:4120

約数の個数: 72

約数和(自身を含む): 65340240

約数和(自身を除く): 43680084

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 49, 54, 63, 84, 98, 108, 126, 147, 189, 196, 252, 294, 378, 441, 588, 756, 882, 1323, 1764, 2646, 4093, 5292, 8186, 12279, 16372, 24558, 28651, 36837, 49116, 57302, 73674, 85953, 110511, 114604, 147348, 171906, 200557, 221022, 257859, 343812, 401114, 442044, 515718, 601671, 773577, 802228, 1031436, 1203342, 1547154, 1805013, 2406684, 3094308, 3610026, 5415039, 7220052, 10830078, 21660156]

約数ペア:

[(1, 21660156), (2, 10830078), (3, 7220052), (4, 5415039), (6, 3610026), (7, 3094308), (9, 2406684), (12, 1805013), (14, 1547154), (18, 1203342), (21, 1031436), (27, 802228), (28, 773577), (36, 601671), (42, 515718), (49, 442044), (54, 401114), (63, 343812), (84, 257859), (98, 221022), (108, 200557), (126, 171906), (147, 147348), (189, 114604), (196, 110511), (252, 85953), (294, 73674), (378, 57302), (441, 49116), (588, 36837), (756, 28651), (882, 24558), (1323, 16372), (1764, 12279), (2646, 8186), (4093, 5292)]