25115680

素因数分解:

$2^5\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1987}}^1$

素因数の和:2081

約数の個数: 48

約数和(自身を含む): 60117120

約数和(自身を除く): 35001440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 79, 80, 158, 160, 316, 395, 632, 790, 1264, 1580, 1987, 2528, 3160, 3974, 6320, 7948, 9935, 12640, 15896, 19870, 31792, 39740, 63584, 79480, 156973, 158960, 313946, 317920, 627892, 784865, 1255784, 1569730, 2511568, 3139460, 5023136, 6278920, 12557840, 25115680]

約数ペア:

[(1, 25115680), (2, 12557840), (4, 6278920), (5, 5023136), (8, 3139460), (10, 2511568), (16, 1569730), (20, 1255784), (32, 784865), (40, 627892), (79, 317920), (80, 313946), (158, 158960), (160, 156973), (316, 79480), (395, 63584), (632, 39740), (790, 31792), (1264, 19870), (1580, 15896), (1987, 12640), (2528, 9935), (3160, 7948), (3974, 6320)]