19963425

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 35140608

約数和(自身を除く): 15177183

約数列:

[1, 3, 5, 15, 23, 25, 69, 71, 75, 115, 163, 213, 345, 355, 489, 575, 815, 1065, 1633, 1725, 1775, 2445, 3749, 4075, 4899, 5325, 8165, 11247, 11573, 12225, 18745, 24495, 34719, 40825, 56235, 57865, 93725, 122475, 173595, 266179, 281175, 289325, 798537, 867975, 1330895, 3992685, 6654475, 19963425]

約数ペア:

[(1, 19963425), (3, 6654475), (5, 3992685), (15, 1330895), (23, 867975), (25, 798537), (69, 289325), (71, 281175), (75, 266179), (115, 173595), (163, 122475), (213, 93725), (345, 57865), (355, 56235), (489, 40825), (575, 34719), (815, 24495), (1065, 18745), (1633, 12225), (1725, 11573), (1775, 11247), (2445, 8165), (3749, 5325), (4075, 4899)]