20349717320

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{319763}}^1$

素因数の和:319854

約数の個数: 64

約数和(自身を含む): 48118086720

約数和(自身を除く): 27768369400

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 43, 74, 86, 148, 172, 185, 215, 296, 344, 370, 430, 740, 860, 1480, 1591, 1720, 3182, 6364, 7955, 12728, 15910, 31820, 63640, 319763, 639526, 1279052, 1598815, 2558104, 3197630, 6395260, 11831231, 12790520, 13749809, 23662462, 27499618, 47324924, 54999236, 59156155, 68749045, 94649848, 109998472, 118312310, 137498090, 236624620, 274996180, 473249240, 508742933, 549992360, 1017485866, 2034971732, 2543714665, 4069943464, 5087429330, 10174858660, 20349717320]

約数ペア:

[(1, 20349717320), (2, 10174858660), (4, 5087429330), (5, 4069943464), (8, 2543714665), (10, 2034971732), (20, 1017485866), (37, 549992360), (40, 508742933), (43, 473249240), (74, 274996180), (86, 236624620), (148, 137498090), (172, 118312310), (185, 109998472), (215, 94649848), (296, 68749045), (344, 59156155), (370, 54999236), (430, 47324924), (740, 27499618), (860, 23662462), (1480, 13749809), (1591, 12790520), (1720, 11831231), (3182, 6395260), (6364, 3197630), (7955, 2558104), (12728, 1598815), (15910, 1279052), (31820, 639526), (63640, 319763)]