401636920

素因数分解:

$2^3\times 5^1\times {\mathrm{2011}}^1\times {\mathrm{4993}}^1$

素因数の和:7015

約数の個数: 32

約数和(自身を含む): 904313520

約数和(自身を除く): 502676600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2011, 4022, 4993, 8044, 9986, 10055, 16088, 19972, 20110, 24965, 39944, 40220, 49930, 80440, 99860, 199720, 10040923, 20081846, 40163692, 50204615, 80327384, 100409230, 200818460, 401636920]

約数ペア:

[(1, 401636920), (2, 200818460), (4, 100409230), (5, 80327384), (8, 50204615), (10, 40163692), (20, 20081846), (40, 10040923), (2011, 199720), (4022, 99860), (4993, 80440), (8044, 49930), (9986, 40220), (10055, 39944), (16088, 24965), (19972, 20110)]