28126660

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{191}}^1\times {\mathrm{199}}^1$

素因数の和:436

約数の個数: 48

約数和(自身を含む): 61286400

約数和(自身を除く): 33159740

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 191, 199, 370, 382, 398, 740, 764, 796, 955, 995, 1910, 1990, 3820, 3980, 7067, 7363, 14134, 14726, 28268, 29452, 35335, 36815, 38009, 70670, 73630, 76018, 141340, 147260, 152036, 190045, 380090, 760180, 1406333, 2812666, 5625332, 7031665, 14063330, 28126660]

約数ペア:

[(1, 28126660), (2, 14063330), (4, 7031665), (5, 5625332), (10, 2812666), (20, 1406333), (37, 760180), (74, 380090), (148, 190045), (185, 152036), (191, 147260), (199, 141340), (370, 76018), (382, 73630), (398, 70670), (740, 38009), (764, 36815), (796, 35335), (955, 29452), (995, 28268), (1910, 14726), (1990, 14134), (3820, 7363), (3980, 7067)]