20897970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{281}}^1$

素因数の和:395

約数の個数: 64

約数和(自身を含む): 52465536

約数和(自身を除く): 31567566

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 37, 67, 74, 111, 134, 185, 201, 222, 281, 335, 370, 402, 555, 562, 670, 843, 1005, 1110, 1405, 1686, 2010, 2479, 2810, 4215, 4958, 7437, 8430, 10397, 12395, 14874, 18827, 20794, 24790, 31191, 37185, 37654, 51985, 56481, 62382, 74370, 94135, 103970, 112962, 155955, 188270, 282405, 311910, 564810, 696599, 1393198, 2089797, 3482995, 4179594, 6965990, 10448985, 20897970]

約数ペア:

[(1, 20897970), (2, 10448985), (3, 6965990), (5, 4179594), (6, 3482995), (10, 2089797), (15, 1393198), (30, 696599), (37, 564810), (67, 311910), (74, 282405), (111, 188270), (134, 155955), (185, 112962), (201, 103970), (222, 94135), (281, 74370), (335, 62382), (370, 56481), (402, 51985), (555, 37654), (562, 37185), (670, 31191), (843, 24790), (1005, 20794), (1110, 18827), (1405, 14874), (1686, 12395), (2010, 10397), (2479, 8430), (2810, 7437), (4215, 4958)]