19171425

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^2$

素因数の和:139

約数の個数: 72

約数和(自身を含む): 39761344

約数和(自身を除く): 20589919

約数列:

[1, 3, 5, 7, 13, 15, 21, 25, 35, 39, 53, 65, 75, 91, 105, 159, 175, 195, 265, 273, 325, 371, 455, 525, 689, 795, 975, 1113, 1325, 1365, 1855, 2067, 2275, 2809, 3445, 3975, 4823, 5565, 6825, 8427, 9275, 10335, 14045, 14469, 17225, 19663, 24115, 27825, 36517, 42135, 51675, 58989, 70225, 72345, 98315, 109551, 120575, 182585, 210675, 255619, 294945, 361725, 491575, 547755, 766857, 912925, 1278095, 1474725, 2738775, 3834285, 6390475, 19171425]

約数ペア:

[(1, 19171425), (3, 6390475), (5, 3834285), (7, 2738775), (13, 1474725), (15, 1278095), (21, 912925), (25, 766857), (35, 547755), (39, 491575), (53, 361725), (65, 294945), (75, 255619), (91, 210675), (105, 182585), (159, 120575), (175, 109551), (195, 98315), (265, 72345), (273, 70225), (325, 58989), (371, 51675), (455, 42135), (525, 36517), (689, 27825), (795, 24115), (975, 19663), (1113, 17225), (1325, 14469), (1365, 14045), (1855, 10335), (2067, 9275), (2275, 8427), (2809, 6825), (3445, 5565), (3975, 4823)]