8721117520

素因数分解:

$2^4\times 5^1\times {\mathrm{1249}}^1\times {\mathrm{87281}}^1$

素因数の和:88543

約数の個数: 40

約数和(自身を含む): 20293065000

約数和(自身を除く): 11571947480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1249, 2498, 4996, 6245, 9992, 12490, 19984, 24980, 49960, 87281, 99920, 174562, 349124, 436405, 698248, 872810, 1396496, 1745620, 3491240, 6982480, 109013969, 218027938, 436055876, 545069845, 872111752, 1090139690, 1744223504, 2180279380, 4360558760, 8721117520]

約数ペア:

[(1, 8721117520), (2, 4360558760), (4, 2180279380), (5, 1744223504), (8, 1090139690), (10, 872111752), (16, 545069845), (20, 436055876), (40, 218027938), (80, 109013969), (1249, 6982480), (2498, 3491240), (4996, 1745620), (6245, 1396496), (9992, 872810), (12490, 698248), (19984, 436405), (24980, 349124), (49960, 174562), (87281, 99920)]