28789420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{1223}}^1$

素因数の和:1350

約数の個数: 48

約数和(自身を含む): 66624768

約数和(自身を除く): 37835348

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 107, 110, 214, 220, 428, 535, 1070, 1177, 1223, 2140, 2354, 2446, 4708, 4892, 5885, 6115, 11770, 12230, 13453, 23540, 24460, 26906, 53812, 67265, 130861, 134530, 261722, 269060, 523444, 654305, 1308610, 1439471, 2617220, 2878942, 5757884, 7197355, 14394710, 28789420]

約数ペア:

[(1, 28789420), (2, 14394710), (4, 7197355), (5, 5757884), (10, 2878942), (11, 2617220), (20, 1439471), (22, 1308610), (44, 654305), (55, 523444), (107, 269060), (110, 261722), (214, 134530), (220, 130861), (428, 67265), (535, 53812), (1070, 26906), (1177, 24460), (1223, 23540), (2140, 13453), (2354, 12230), (2446, 11770), (4708, 6115), (4892, 5885)]