78847780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{1801}}^1$

素因数の和:2020

約数の個数: 48

約数和(自身を含む): 181641600

約数和(自身を除く): 102793820

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 199, 220, 398, 796, 995, 1801, 1990, 2189, 3602, 3980, 4378, 7204, 8756, 9005, 10945, 18010, 19811, 21890, 36020, 39622, 43780, 79244, 99055, 198110, 358399, 396220, 716798, 1433596, 1791995, 3583990, 3942389, 7167980, 7884778, 15769556, 19711945, 39423890, 78847780]

約数ペア:

[(1, 78847780), (2, 39423890), (4, 19711945), (5, 15769556), (10, 7884778), (11, 7167980), (20, 3942389), (22, 3583990), (44, 1791995), (55, 1433596), (110, 716798), (199, 396220), (220, 358399), (398, 198110), (796, 99055), (995, 79244), (1801, 43780), (1990, 39622), (2189, 36020), (3602, 21890), (3980, 19811), (4378, 18010), (7204, 10945), (8756, 9005)]