20284720

素因数分解:

$2^4\times 5^1\times {\mathrm{227}}^1\times {\mathrm{1117}}^1$

素因数の和:1357

約数の個数: 40

約数和(自身を含む): 47412144

約数和(自身を除く): 27127424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 227, 454, 908, 1117, 1135, 1816, 2234, 2270, 3632, 4468, 4540, 5585, 8936, 9080, 11170, 17872, 18160, 22340, 44680, 89360, 253559, 507118, 1014236, 1267795, 2028472, 2535590, 4056944, 5071180, 10142360, 20284720]

約数ペア:

[(1, 20284720), (2, 10142360), (4, 5071180), (5, 4056944), (8, 2535590), (10, 2028472), (16, 1267795), (20, 1014236), (40, 507118), (80, 253559), (227, 89360), (454, 44680), (908, 22340), (1117, 18160), (1135, 17872), (1816, 11170), (2234, 9080), (2270, 8936), (3632, 5585), (4468, 4540)]