21726145

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{197}}^1$

素因数の和:369

約数の個数: 32

約数和(自身を含む): 31477248

約数和(自身を除く): 9751103

約数列:

[1, 5, 7, 23, 35, 115, 137, 161, 197, 685, 805, 959, 985, 1379, 3151, 4531, 4795, 6895, 15755, 22057, 22655, 26989, 31717, 110285, 134945, 158585, 188923, 620747, 944615, 3103735, 4345229, 21726145]

約数ペア:

[(1, 21726145), (5, 4345229), (7, 3103735), (23, 944615), (35, 620747), (115, 188923), (137, 158585), (161, 134945), (197, 110285), (685, 31717), (805, 26989), (959, 22655), (985, 22057), (1379, 15755), (3151, 6895), (4531, 4795)]