28637475

素因数分解:

$3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 49580160

約数和(自身を除く): 20942685

約数列:

[1, 3, 5, 15, 25, 41, 67, 75, 123, 139, 201, 205, 335, 417, 615, 695, 1005, 1025, 1675, 2085, 2747, 3075, 3475, 5025, 5699, 8241, 9313, 10425, 13735, 17097, 27939, 28495, 41205, 46565, 68675, 85485, 139695, 142475, 206025, 232825, 381833, 427425, 698475, 1145499, 1909165, 5727495, 9545825, 28637475]

約数ペア:

[(1, 28637475), (3, 9545825), (5, 5727495), (15, 1909165), (25, 1145499), (41, 698475), (67, 427425), (75, 381833), (123, 232825), (139, 206025), (201, 142475), (205, 139695), (335, 85485), (417, 68675), (615, 46565), (695, 41205), (1005, 28495), (1025, 27939), (1675, 17097), (2085, 13735), (2747, 10425), (3075, 9313), (3475, 8241), (5025, 5699)]