81376900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{2551}}^1$

素因数の和:2605

約数の個数: 72

約数和(自身を含む): 199362240

約数和(自身を除く): 117985340

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 29, 44, 50, 55, 58, 100, 110, 116, 145, 220, 275, 290, 319, 550, 580, 638, 725, 1100, 1276, 1450, 1595, 2551, 2900, 3190, 5102, 6380, 7975, 10204, 12755, 15950, 25510, 28061, 31900, 51020, 56122, 63775, 73979, 112244, 127550, 140305, 147958, 255100, 280610, 295916, 369895, 561220, 701525, 739790, 813769, 1403050, 1479580, 1627538, 1849475, 2806100, 3255076, 3698950, 4068845, 7397900, 8137690, 16275380, 20344225, 40688450, 81376900]

約数ペア:

[(1, 81376900), (2, 40688450), (4, 20344225), (5, 16275380), (10, 8137690), (11, 7397900), (20, 4068845), (22, 3698950), (25, 3255076), (29, 2806100), (44, 1849475), (50, 1627538), (55, 1479580), (58, 1403050), (100, 813769), (110, 739790), (116, 701525), (145, 561220), (220, 369895), (275, 295916), (290, 280610), (319, 255100), (550, 147958), (580, 140305), (638, 127550), (725, 112244), (1100, 73979), (1276, 63775), (1450, 56122), (1595, 51020), (2551, 31900), (2900, 28061), (3190, 25510), (5102, 15950), (6380, 12755), (7975, 10204)]