21270704

素因数分解:

$2^4\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2087}}^1$

素因数の和:2122

約数の個数: 60

約数和(自身を含む): 51652944

約数和(自身を除く): 30382240

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 49, 52, 56, 91, 98, 104, 112, 182, 196, 208, 364, 392, 637, 728, 784, 1274, 1456, 2087, 2548, 4174, 5096, 8348, 10192, 14609, 16696, 27131, 29218, 33392, 54262, 58436, 102263, 108524, 116872, 189917, 204526, 217048, 233744, 379834, 409052, 434096, 759668, 818104, 1329419, 1519336, 1636208, 2658838, 3038672, 5317676, 10635352, 21270704]

約数ペア:

[(1, 21270704), (2, 10635352), (4, 5317676), (7, 3038672), (8, 2658838), (13, 1636208), (14, 1519336), (16, 1329419), (26, 818104), (28, 759668), (49, 434096), (52, 409052), (56, 379834), (91, 233744), (98, 217048), (104, 204526), (112, 189917), (182, 116872), (196, 108524), (208, 102263), (364, 58436), (392, 54262), (637, 33392), (728, 29218), (784, 27131), (1274, 16696), (1456, 14609), (2087, 10192), (2548, 8348), (4174, 5096)]