20512652560

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{331}}^1\times {\mathrm{5573}}^1$

素因数の和:6056

約数の個数: 80

約数和(自身を含む): 48188790720

約数和(自身を除く): 27676138160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 331, 556, 662, 695, 1112, 1324, 1390, 1655, 2224, 2648, 2780, 3310, 5296, 5560, 5573, 6620, 11120, 11146, 13240, 22292, 26480, 27865, 44584, 46009, 55730, 89168, 92018, 111460, 184036, 222920, 230045, 368072, 445840, 460090, 736144, 774647, 920180, 1549294, 1840360, 1844663, 3098588, 3680720, 3689326, 3873235, 6197176, 7378652, 7746470, 9223315, 12394352, 14757304, 15492940, 18446630, 29514608, 30985880, 36893260, 61971760, 73786520, 147573040, 256408157, 512816314, 1025632628, 1282040785, 2051265256, 2564081570, 4102530512, 5128163140, 10256326280, 20512652560]

約数ペア:

[(1, 20512652560), (2, 10256326280), (4, 5128163140), (5, 4102530512), (8, 2564081570), (10, 2051265256), (16, 1282040785), (20, 1025632628), (40, 512816314), (80, 256408157), (139, 147573040), (278, 73786520), (331, 61971760), (556, 36893260), (662, 30985880), (695, 29514608), (1112, 18446630), (1324, 15492940), (1390, 14757304), (1655, 12394352), (2224, 9223315), (2648, 7746470), (2780, 7378652), (3310, 6197176), (5296, 3873235), (5560, 3689326), (5573, 3680720), (6620, 3098588), (11120, 1844663), (11146, 1840360), (13240, 1549294), (22292, 920180), (26480, 774647), (27865, 736144), (44584, 460090), (46009, 445840), (55730, 368072), (89168, 230045), (92018, 222920), (111460, 184036)]