21880090

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{35869}}^1$

素因数の和:35937

約数の個数: 16

約数和(自身を含む): 40030920

約数和(自身を除く): 18150830

約数列:

[1, 2, 5, 10, 61, 122, 305, 610, 35869, 71738, 179345, 358690, 2188009, 4376018, 10940045, 21880090]

約数ペア:

[(1, 21880090), (2, 10940045), (5, 4376018), (10, 2188009), (61, 358690), (122, 179345), (305, 71738), (610, 35869)]