19618640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{12907}}^1$

素因数の和:12939

約数の個数: 40

約数和(自身を含む): 48017760

約数和(自身を除く): 28399120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 12907, 25814, 51628, 64535, 103256, 129070, 206512, 245233, 258140, 490466, 516280, 980932, 1032560, 1226165, 1961864, 2452330, 3923728, 4904660, 9809320, 19618640]

約数ペア:

[(1, 19618640), (2, 9809320), (4, 4904660), (5, 3923728), (8, 2452330), (10, 1961864), (16, 1226165), (19, 1032560), (20, 980932), (38, 516280), (40, 490466), (76, 258140), (80, 245233), (95, 206512), (152, 129070), (190, 103256), (304, 64535), (380, 51628), (760, 25814), (1520, 12907)]