21790164

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{349}}^1$

素因数の和:421

約数の個数: 72

約数和(自身を含む): 57349600

約数和(自身を除く): 35559436

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 43, 44, 66, 86, 121, 129, 132, 172, 242, 258, 349, 363, 473, 484, 516, 698, 726, 946, 1047, 1396, 1419, 1452, 1892, 2094, 2838, 3839, 4188, 5203, 5676, 7678, 10406, 11517, 15007, 15356, 15609, 20812, 23034, 30014, 31218, 42229, 45021, 46068, 60028, 62436, 84458, 90042, 126687, 165077, 168916, 180084, 253374, 330154, 495231, 506748, 660308, 990462, 1815847, 1980924, 3631694, 5447541, 7263388, 10895082, 21790164]

約数ペア:

[(1, 21790164), (2, 10895082), (3, 7263388), (4, 5447541), (6, 3631694), (11, 1980924), (12, 1815847), (22, 990462), (33, 660308), (43, 506748), (44, 495231), (66, 330154), (86, 253374), (121, 180084), (129, 168916), (132, 165077), (172, 126687), (242, 90042), (258, 84458), (349, 62436), (363, 60028), (473, 46068), (484, 45021), (516, 42229), (698, 31218), (726, 30014), (946, 23034), (1047, 20812), (1396, 15609), (1419, 15356), (1452, 15007), (1892, 11517), (2094, 10406), (2838, 7678), (3839, 5676), (4188, 5203)]