18118780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47681}}^1$

素因数の和:47709

約数の個数: 24

約数和(自身を含む): 40052880

約数和(自身を除く): 21934100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 47681, 95362, 190724, 238405, 476810, 905939, 953620, 1811878, 3623756, 4529695, 9059390, 18118780]

約数ペア:

[(1, 18118780), (2, 9059390), (4, 4529695), (5, 3623756), (10, 1811878), (19, 953620), (20, 905939), (38, 476810), (76, 238405), (95, 190724), (190, 95362), (380, 47681)]