21220112

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{29}}^2\times {\mathrm{83}}^1$

素因数の和:168

約数の個数: 60

約数和(自身を含む): 45361680

約数和(自身を除く): 24141568

約数列:

[1, 2, 4, 8, 16, 19, 29, 38, 58, 76, 83, 116, 152, 166, 232, 304, 332, 464, 551, 664, 841, 1102, 1328, 1577, 1682, 2204, 2407, 3154, 3364, 4408, 4814, 6308, 6728, 8816, 9628, 12616, 13456, 15979, 19256, 25232, 31958, 38512, 45733, 63916, 69803, 91466, 127832, 139606, 182932, 255664, 279212, 365864, 558424, 731728, 1116848, 1326257, 2652514, 5305028, 10610056, 21220112]

約数ペア:

[(1, 21220112), (2, 10610056), (4, 5305028), (8, 2652514), (16, 1326257), (19, 1116848), (29, 731728), (38, 558424), (58, 365864), (76, 279212), (83, 255664), (116, 182932), (152, 139606), (166, 127832), (232, 91466), (304, 69803), (332, 63916), (464, 45733), (551, 38512), (664, 31958), (841, 25232), (1102, 19256), (1328, 15979), (1577, 13456), (1682, 12616), (2204, 9628), (2407, 8816), (3154, 6728), (3364, 6308), (4408, 4814)]