20941648

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{757}}^1$

素因数の和:804

約数の個数: 80

約数和(自身を含む): 52635520

約数和(自身を除く): 31693872

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 19, 26, 28, 38, 52, 56, 76, 91, 104, 112, 133, 152, 182, 208, 247, 266, 304, 364, 494, 532, 728, 757, 988, 1064, 1456, 1514, 1729, 1976, 2128, 3028, 3458, 3952, 5299, 6056, 6916, 9841, 10598, 12112, 13832, 14383, 19682, 21196, 27664, 28766, 39364, 42392, 57532, 68887, 78728, 84784, 100681, 115064, 137774, 157456, 186979, 201362, 230128, 275548, 373958, 402724, 551096, 747916, 805448, 1102192, 1308853, 1495832, 1610896, 2617706, 2991664, 5235412, 10470824, 20941648]

約数ペア:

[(1, 20941648), (2, 10470824), (4, 5235412), (7, 2991664), (8, 2617706), (13, 1610896), (14, 1495832), (16, 1308853), (19, 1102192), (26, 805448), (28, 747916), (38, 551096), (52, 402724), (56, 373958), (76, 275548), (91, 230128), (104, 201362), (112, 186979), (133, 157456), (152, 137774), (182, 115064), (208, 100681), (247, 84784), (266, 78728), (304, 68887), (364, 57532), (494, 42392), (532, 39364), (728, 28766), (757, 27664), (988, 21196), (1064, 19682), (1456, 14383), (1514, 13832), (1729, 12112), (1976, 10598), (2128, 9841), (3028, 6916), (3458, 6056), (3952, 5299)]