19803040

素因数分解:

$2^5\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2029}}^1$

素因数の和:2105

約数の個数: 48

約数和(自身を含む): 47575080

約数和(自身を除く): 27772040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 80, 122, 160, 244, 305, 488, 610, 976, 1220, 1952, 2029, 2440, 4058, 4880, 8116, 9760, 10145, 16232, 20290, 32464, 40580, 64928, 81160, 123769, 162320, 247538, 324640, 495076, 618845, 990152, 1237690, 1980304, 2475380, 3960608, 4950760, 9901520, 19803040]

約数ペア:

[(1, 19803040), (2, 9901520), (4, 4950760), (5, 3960608), (8, 2475380), (10, 1980304), (16, 1237690), (20, 990152), (32, 618845), (40, 495076), (61, 324640), (80, 247538), (122, 162320), (160, 123769), (244, 81160), (305, 64928), (488, 40580), (610, 32464), (976, 20290), (1220, 16232), (1952, 10145), (2029, 9760), (2440, 8116), (4058, 4880)]