21220752

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{461}}^1$

素因数の和:616

約数の個数: 80

約数和(自身を含む): 63245952

約数和(自身を除く): 42025200

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 84, 112, 137, 168, 274, 336, 411, 461, 548, 822, 922, 959, 1096, 1383, 1644, 1844, 1918, 2192, 2766, 2877, 3227, 3288, 3688, 3836, 5532, 5754, 6454, 6576, 7376, 7672, 9681, 11064, 11508, 12908, 15344, 19362, 22128, 23016, 25816, 38724, 46032, 51632, 63157, 77448, 126314, 154896, 189471, 252628, 378942, 442099, 505256, 757884, 884198, 1010512, 1326297, 1515768, 1768396, 2652594, 3031536, 3536792, 5305188, 7073584, 10610376, 21220752]

約数ペア:

[(1, 21220752), (2, 10610376), (3, 7073584), (4, 5305188), (6, 3536792), (7, 3031536), (8, 2652594), (12, 1768396), (14, 1515768), (16, 1326297), (21, 1010512), (24, 884198), (28, 757884), (42, 505256), (48, 442099), (56, 378942), (84, 252628), (112, 189471), (137, 154896), (168, 126314), (274, 77448), (336, 63157), (411, 51632), (461, 46032), (548, 38724), (822, 25816), (922, 23016), (959, 22128), (1096, 19362), (1383, 15344), (1644, 12908), (1844, 11508), (1918, 11064), (2192, 9681), (2766, 7672), (2877, 7376), (3227, 6576), (3288, 6454), (3688, 5754), (3836, 5532)]