1880781520

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{573409}}^1$

素因数の和:573463

約数の個数: 40

約数和(自身を含む): 4479478920

約数和(自身を除く): 2598697400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 573409, 1146818, 2293636, 2867045, 4587272, 5734090, 9174544, 11468180, 22936360, 23509769, 45872720, 47019538, 94039076, 117548845, 188078152, 235097690, 376156304, 470195380, 940390760, 1880781520]

約数ペア:

[(1, 1880781520), (2, 940390760), (4, 470195380), (5, 376156304), (8, 235097690), (10, 188078152), (16, 117548845), (20, 94039076), (40, 47019538), (41, 45872720), (80, 23509769), (82, 22936360), (164, 11468180), (205, 9174544), (328, 5734090), (410, 4587272), (656, 2867045), (820, 2293636), (1640, 1146818), (3280, 573409)]