28387275

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{389}}^1$

素因数の和:548

約数の個数: 48

約数和(自身を含む): 54163200

約数和(自身を除く): 25775925

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 139, 175, 389, 417, 525, 695, 973, 1167, 1945, 2085, 2723, 2919, 3475, 4865, 5835, 8169, 9725, 10425, 13615, 14595, 24325, 29175, 40845, 54071, 68075, 72975, 162213, 204225, 270355, 378497, 811065, 1135491, 1351775, 1892485, 4055325, 5677455, 9462425, 28387275]

約数ペア:

[(1, 28387275), (3, 9462425), (5, 5677455), (7, 4055325), (15, 1892485), (21, 1351775), (25, 1135491), (35, 811065), (75, 378497), (105, 270355), (139, 204225), (175, 162213), (389, 72975), (417, 68075), (525, 54071), (695, 40845), (973, 29175), (1167, 24325), (1945, 14595), (2085, 13615), (2723, 10425), (2919, 9725), (3475, 8169), (4865, 5835)]