21819985

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{367}}^1$

素因数の和:453

約数の個数: 32

約数和(自身を含む): 30523392

約数和(自身を除く): 8703407

約数列:

[1, 5, 11, 23, 47, 55, 115, 235, 253, 367, 517, 1081, 1265, 1835, 2585, 4037, 5405, 8441, 11891, 17249, 20185, 42205, 59455, 86245, 92851, 189739, 396727, 464255, 948695, 1983635, 4363997, 21819985]

約数ペア:

[(1, 21819985), (5, 4363997), (11, 1983635), (23, 948695), (47, 464255), (55, 396727), (115, 189739), (235, 92851), (253, 86245), (367, 59455), (517, 42205), (1081, 20185), (1265, 17249), (1835, 11891), (2585, 8441), (4037, 5405)]