21948105

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{61}}^1\times {\mathrm{83}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 38372544

約数和(自身を除く): 16424439

約数列:

[1, 3, 5, 15, 17, 51, 61, 83, 85, 183, 249, 255, 289, 305, 415, 867, 915, 1037, 1245, 1411, 1445, 3111, 4233, 4335, 5063, 5185, 7055, 15189, 15555, 17629, 21165, 23987, 25315, 52887, 71961, 75945, 86071, 88145, 119935, 258213, 264435, 359805, 430355, 1291065, 1463207, 4389621, 7316035, 21948105]

約数ペア:

[(1, 21948105), (3, 7316035), (5, 4389621), (15, 1463207), (17, 1291065), (51, 430355), (61, 359805), (83, 264435), (85, 258213), (183, 119935), (249, 88145), (255, 86071), (289, 75945), (305, 71961), (415, 52887), (867, 25315), (915, 23987), (1037, 21165), (1245, 17629), (1411, 15555), (1445, 15189), (3111, 7055), (4233, 5185), (4335, 5063)]