21571760

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{5503}}^1$

素因数の和:5530

約数の個数: 60

約数和(自身を含む): 58353408

約数和(自身を除く): 36781648

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 5503, 11006, 22012, 27515, 38521, 44024, 55030, 77042, 88048, 110060, 154084, 192605, 220120, 269647, 308168, 385210, 440240, 539294, 616336, 770420, 1078588, 1348235, 1540840, 2157176, 2696470, 3081680, 4314352, 5392940, 10785880, 21571760]

約数ペア:

[(1, 21571760), (2, 10785880), (4, 5392940), (5, 4314352), (7, 3081680), (8, 2696470), (10, 2157176), (14, 1540840), (16, 1348235), (20, 1078588), (28, 770420), (35, 616336), (40, 539294), (49, 440240), (56, 385210), (70, 308168), (80, 269647), (98, 220120), (112, 192605), (140, 154084), (196, 110060), (245, 88048), (280, 77042), (392, 55030), (490, 44024), (560, 38521), (784, 27515), (980, 22012), (1960, 11006), (3920, 5503)]