25016840

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{2011}}^1$

素因数の和:2333

約数の個数: 32

約数和(自身を含む): 56496960

約数和(自身を除く): 31480120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1555, 2011, 2488, 3110, 4022, 6220, 8044, 10055, 12440, 16088, 20110, 40220, 80440, 625421, 1250842, 2501684, 3127105, 5003368, 6254210, 12508420, 25016840]

約数ペア:

[(1, 25016840), (2, 12508420), (4, 6254210), (5, 5003368), (8, 3127105), (10, 2501684), (20, 1250842), (40, 625421), (311, 80440), (622, 40220), (1244, 20110), (1555, 16088), (2011, 12440), (2488, 10055), (3110, 8044), (4022, 6220)]