18880994

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{9643}}^1$

素因数の和:9745

約数の個数: 16

約数和(自身を含む): 31246560

約数和(自身を除く): 12365566

約数列:

[1, 2, 11, 22, 89, 178, 979, 1958, 9643, 19286, 106073, 212146, 858227, 1716454, 9440497, 18880994]

約数ペア:

[(1, 18880994), (2, 9440497), (11, 1716454), (22, 858227), (89, 212146), (178, 106073), (979, 19286), (1958, 9643)]