25856780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:350

約数の個数: 48

約数和(自身を含む): 55883520

約数和(自身を除く): 30026740

約数列:

[1, 2, 4, 5, 10, 20, 71, 131, 139, 142, 262, 278, 284, 355, 524, 556, 655, 695, 710, 1310, 1390, 1420, 2620, 2780, 9301, 9869, 18209, 18602, 19738, 36418, 37204, 39476, 46505, 49345, 72836, 91045, 93010, 98690, 182090, 186020, 197380, 364180, 1292839, 2585678, 5171356, 6464195, 12928390, 25856780]

約数ペア:

[(1, 25856780), (2, 12928390), (4, 6464195), (5, 5171356), (10, 2585678), (20, 1292839), (71, 364180), (131, 197380), (139, 186020), (142, 182090), (262, 98690), (278, 93010), (284, 91045), (355, 72836), (524, 49345), (556, 46505), (655, 39476), (695, 37204), (710, 36418), (1310, 19738), (1390, 18602), (1420, 18209), (2620, 9869), (2780, 9301)]