28891540

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{457}}^1$

素因数の和:604

約数の個数: 48

約数和(自身を含む): 63478800

約数和(自身を除く): 34587260

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 109, 116, 145, 218, 290, 436, 457, 545, 580, 914, 1090, 1828, 2180, 2285, 3161, 4570, 6322, 9140, 12644, 13253, 15805, 26506, 31610, 49813, 53012, 63220, 66265, 99626, 132530, 199252, 249065, 265060, 498130, 996260, 1444577, 2889154, 5778308, 7222885, 14445770, 28891540]

約数ペア:

[(1, 28891540), (2, 14445770), (4, 7222885), (5, 5778308), (10, 2889154), (20, 1444577), (29, 996260), (58, 498130), (109, 265060), (116, 249065), (145, 199252), (218, 132530), (290, 99626), (436, 66265), (457, 63220), (545, 53012), (580, 49813), (914, 31610), (1090, 26506), (1828, 15805), (2180, 13253), (2285, 12644), (3161, 9140), (4570, 6322)]