18787580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1009}}^1$

素因数の和:1051

約数の個数: 72

約数和(自身を含む): 48358800

約数和(自身を除く): 29571220

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 133, 140, 190, 196, 245, 266, 380, 490, 532, 665, 931, 980, 1009, 1330, 1862, 2018, 2660, 3724, 4036, 4655, 5045, 7063, 9310, 10090, 14126, 18620, 19171, 20180, 28252, 35315, 38342, 49441, 70630, 76684, 95855, 98882, 134197, 141260, 191710, 197764, 247205, 268394, 383420, 494410, 536788, 670985, 939379, 988820, 1341970, 1878758, 2683940, 3757516, 4696895, 9393790, 18787580]

約数ペア:

[(1, 18787580), (2, 9393790), (4, 4696895), (5, 3757516), (7, 2683940), (10, 1878758), (14, 1341970), (19, 988820), (20, 939379), (28, 670985), (35, 536788), (38, 494410), (49, 383420), (70, 268394), (76, 247205), (95, 197764), (98, 191710), (133, 141260), (140, 134197), (190, 98882), (196, 95855), (245, 76684), (266, 70630), (380, 49441), (490, 38342), (532, 35315), (665, 28252), (931, 20180), (980, 19171), (1009, 18620), (1330, 14126), (1862, 10090), (2018, 9310), (2660, 7063), (3724, 5045), (4036, 4655)]