28556240

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{18787}}^1$

素因数の和:18819

約数の個数: 40

約数和(自身を含む): 69891360

約数和(自身を除く): 41335120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 18787, 37574, 75148, 93935, 150296, 187870, 300592, 356953, 375740, 713906, 751480, 1427812, 1502960, 1784765, 2855624, 3569530, 5711248, 7139060, 14278120, 28556240]

約数ペア:

[(1, 28556240), (2, 14278120), (4, 7139060), (5, 5711248), (8, 3569530), (10, 2855624), (16, 1784765), (19, 1502960), (20, 1427812), (38, 751480), (40, 713906), (76, 375740), (80, 356953), (95, 300592), (152, 187870), (190, 150296), (304, 93935), (380, 75148), (760, 37574), (1520, 18787)]