20239940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1087}}^1$

素因数の和:1129

約数の個数: 72

約数和(自身を含む): 52093440

約数和(自身を除く): 31853500

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, 1087, 1330, 1862, 2174, 2660, 3724, 4348, 4655, 5435, 7609, 9310, 10870, 15218, 18620, 20653, 21740, 30436, 38045, 41306, 53263, 76090, 82612, 103265, 106526, 144571, 152180, 206530, 213052, 266315, 289142, 413060, 532630, 578284, 722855, 1011997, 1065260, 1445710, 2023994, 2891420, 4047988, 5059985, 10119970, 20239940]

約数ペア:

[(1, 20239940), (2, 10119970), (4, 5059985), (5, 4047988), (7, 2891420), (10, 2023994), (14, 1445710), (19, 1065260), (20, 1011997), (28, 722855), (35, 578284), (38, 532630), (49, 413060), (70, 289142), (76, 266315), (95, 213052), (98, 206530), (133, 152180), (140, 144571), (190, 106526), (196, 103265), (245, 82612), (266, 76090), (380, 53263), (490, 41306), (532, 38045), (665, 30436), (931, 21740), (980, 20653), (1087, 18620), (1330, 15218), (1862, 10870), (2174, 9310), (2660, 7609), (3724, 5435), (4348, 4655)]