28751010280

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{701}}^1\times {\mathrm{2557}}^1$

素因数の和:3670

約数の個数: 64

約数和(自身を含む): 64969004880

約数和(自身を除く): 36217994600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 701, 802, 1402, 1604, 2005, 2557, 2804, 3208, 3505, 4010, 5114, 5608, 7010, 8020, 10228, 12785, 14020, 16040, 20456, 25570, 28040, 51140, 102280, 281101, 562202, 1025357, 1124404, 1405505, 1792457, 2050714, 2248808, 2811010, 3584914, 4101428, 5126785, 5622020, 7169828, 8202856, 8962285, 10253570, 11244040, 14339656, 17924570, 20507140, 35849140, 41014280, 71698280, 718775257, 1437550514, 2875101028, 3593876285, 5750202056, 7187752570, 14375505140, 28751010280]

約数ペア:

[(1, 28751010280), (2, 14375505140), (4, 7187752570), (5, 5750202056), (8, 3593876285), (10, 2875101028), (20, 1437550514), (40, 718775257), (401, 71698280), (701, 41014280), (802, 35849140), (1402, 20507140), (1604, 17924570), (2005, 14339656), (2557, 11244040), (2804, 10253570), (3208, 8962285), (3505, 8202856), (4010, 7169828), (5114, 5622020), (5608, 5126785), (7010, 4101428), (8020, 3584914), (10228, 2811010), (12785, 2248808), (14020, 2050714), (16040, 1792457), (20456, 1405505), (25570, 1124404), (28040, 1025357), (51140, 562202), (102280, 281101)]