19764640

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{2521}}^1$

素因数の和:2550

約数の個数: 72

約数和(自身を含む): 54339012

約数和(自身を除く): 34574372

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 2521, 3920, 5042, 7840, 10084, 12605, 17647, 20168, 25210, 35294, 40336, 50420, 70588, 80672, 88235, 100840, 123529, 141176, 176470, 201680, 247058, 282352, 352940, 403360, 494116, 564704, 617645, 705880, 988232, 1235290, 1411760, 1976464, 2470580, 2823520, 3952928, 4941160, 9882320, 19764640]

約数ペア:

[(1, 19764640), (2, 9882320), (4, 4941160), (5, 3952928), (7, 2823520), (8, 2470580), (10, 1976464), (14, 1411760), (16, 1235290), (20, 988232), (28, 705880), (32, 617645), (35, 564704), (40, 494116), (49, 403360), (56, 352940), (70, 282352), (80, 247058), (98, 201680), (112, 176470), (140, 141176), (160, 123529), (196, 100840), (224, 88235), (245, 80672), (280, 70588), (392, 50420), (490, 40336), (560, 35294), (784, 25210), (980, 20168), (1120, 17647), (1568, 12605), (1960, 10084), (2521, 7840), (3920, 5042)]