28787480

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{367}}^1$

素因数の和:468

約数の個数: 64

約数和(自身を含む): 67962240

約数和(自身を除く): 39174760

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 53, 74, 106, 148, 185, 212, 265, 296, 367, 370, 424, 530, 734, 740, 1060, 1468, 1480, 1835, 1961, 2120, 2936, 3670, 3922, 7340, 7844, 9805, 13579, 14680, 15688, 19451, 19610, 27158, 38902, 39220, 54316, 67895, 77804, 78440, 97255, 108632, 135790, 155608, 194510, 271580, 389020, 543160, 719687, 778040, 1439374, 2878748, 3598435, 5757496, 7196870, 14393740, 28787480]

約数ペア:

[(1, 28787480), (2, 14393740), (4, 7196870), (5, 5757496), (8, 3598435), (10, 2878748), (20, 1439374), (37, 778040), (40, 719687), (53, 543160), (74, 389020), (106, 271580), (148, 194510), (185, 155608), (212, 135790), (265, 108632), (296, 97255), (367, 78440), (370, 77804), (424, 67895), (530, 54316), (734, 39220), (740, 38902), (1060, 27158), (1468, 19610), (1480, 19451), (1835, 15688), (1961, 14680), (2120, 13579), (2936, 9805), (3670, 7844), (3922, 7340)]