19221475

素因数分解:

$5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1$

素因数の和:125

約数の個数: 72

約数和(自身を含む): 32060448

約数和(自身を除く): 12838973

約数列:

[1, 5, 7, 13, 17, 25, 35, 49, 65, 71, 85, 91, 119, 175, 221, 245, 325, 355, 425, 455, 497, 595, 637, 833, 923, 1105, 1207, 1225, 1547, 1775, 2275, 2485, 2975, 3185, 3479, 4165, 4615, 5525, 6035, 6461, 7735, 8449, 10829, 12425, 15691, 15925, 17395, 20825, 23075, 30175, 32305, 38675, 42245, 45227, 54145, 59143, 78455, 86975, 109837, 161525, 211225, 226135, 270725, 295715, 392275, 549185, 768859, 1130675, 1478575, 2745925, 3844295, 19221475]

約数ペア:

[(1, 19221475), (5, 3844295), (7, 2745925), (13, 1478575), (17, 1130675), (25, 768859), (35, 549185), (49, 392275), (65, 295715), (71, 270725), (85, 226135), (91, 211225), (119, 161525), (175, 109837), (221, 86975), (245, 78455), (325, 59143), (355, 54145), (425, 45227), (455, 42245), (497, 38675), (595, 32305), (637, 30175), (833, 23075), (923, 20825), (1105, 17395), (1207, 15925), (1225, 15691), (1547, 12425), (1775, 10829), (2275, 8449), (2485, 7735), (2975, 6461), (3185, 6035), (3479, 5525), (4165, 4615)]