18191740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{977}}^1$

素因数の和:1019

約数の個数: 72

約数和(自身を含む): 46826640

約数和(自身を除く): 28634900

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, 977, 980, 1330, 1862, 1954, 2660, 3724, 3908, 4655, 4885, 6839, 9310, 9770, 13678, 18563, 18620, 19540, 27356, 34195, 37126, 47873, 68390, 74252, 92815, 95746, 129941, 136780, 185630, 191492, 239365, 259882, 371260, 478730, 519764, 649705, 909587, 957460, 1299410, 1819174, 2598820, 3638348, 4547935, 9095870, 18191740]

約数ペア:

[(1, 18191740), (2, 9095870), (4, 4547935), (5, 3638348), (7, 2598820), (10, 1819174), (14, 1299410), (19, 957460), (20, 909587), (28, 649705), (35, 519764), (38, 478730), (49, 371260), (70, 259882), (76, 239365), (95, 191492), (98, 185630), (133, 136780), (140, 129941), (190, 95746), (196, 92815), (245, 74252), (266, 68390), (380, 47873), (490, 37126), (532, 34195), (665, 27356), (931, 19540), (977, 18620), (980, 18563), (1330, 13678), (1862, 9770), (1954, 9310), (2660, 6839), (3724, 4885), (3908, 4655)]