20348235

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{397}}^1$

素因数の和:492

約数の個数: 48

約数和(自身を含む): 37997856

約数和(自身を除く): 17649621

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 67, 85, 153, 201, 255, 335, 397, 603, 765, 1005, 1139, 1191, 1985, 3015, 3417, 3573, 5695, 5955, 6749, 10251, 17085, 17865, 20247, 26599, 33745, 51255, 60741, 79797, 101235, 132995, 239391, 303705, 398985, 452183, 1196955, 1356549, 2260915, 4069647, 6782745, 20348235]

約数ペア:

[(1, 20348235), (3, 6782745), (5, 4069647), (9, 2260915), (15, 1356549), (17, 1196955), (45, 452183), (51, 398985), (67, 303705), (85, 239391), (153, 132995), (201, 101235), (255, 79797), (335, 60741), (397, 51255), (603, 33745), (765, 26599), (1005, 20247), (1139, 17865), (1191, 17085), (1985, 10251), (3015, 6749), (3417, 5955), (3573, 5695)]