20940974

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{3923}}^1$

素因数の和:4099

約数の個数: 16

約数和(自身を含む): 33479568

約数和(自身を除く): 12538594

約数列:

[1, 2, 17, 34, 157, 314, 2669, 3923, 5338, 7846, 66691, 133382, 615911, 1231822, 10470487, 20940974]

約数ペア:

[(1, 20940974), (2, 10470487), (17, 1231822), (34, 615911), (157, 133382), (314, 66691), (2669, 7846), (3923, 5338)]