21205044

素因数分解:

$2^2\times 3^3\times 7^2\times {\mathrm{4007}}^1$

素因数の和:4034

約数の個数: 72

約数和(自身を含む): 63967680

約数和(自身を除く): 42762636

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, 4007, 5292, 8014, 12021, 16028, 24042, 28049, 36063, 48084, 56098, 72126, 84147, 108189, 112196, 144252, 168294, 196343, 216378, 252441, 336588, 392686, 432756, 504882, 589029, 757323, 785372, 1009764, 1178058, 1514646, 1767087, 2356116, 3029292, 3534174, 5301261, 7068348, 10602522, 21205044]

約数ペア:

[(1, 21205044), (2, 10602522), (3, 7068348), (4, 5301261), (6, 3534174), (7, 3029292), (9, 2356116), (12, 1767087), (14, 1514646), (18, 1178058), (21, 1009764), (27, 785372), (28, 757323), (36, 589029), (42, 504882), (49, 432756), (54, 392686), (63, 336588), (84, 252441), (98, 216378), (108, 196343), (126, 168294), (147, 144252), (189, 112196), (196, 108189), (252, 84147), (294, 72126), (378, 56098), (441, 48084), (588, 36063), (756, 28049), (882, 24042), (1323, 16028), (1764, 12021), (2646, 8014), (4007, 5292)]