21572235

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{173}}^1$

素因数の和:364

約数の個数: 48

約数和(自身を含む): 40064544

約数和(自身を除く): 18492309

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 163, 173, 255, 489, 519, 765, 815, 865, 1467, 1557, 2445, 2595, 2771, 2941, 7335, 7785, 8313, 8823, 13855, 14705, 24939, 26469, 28199, 41565, 44115, 84597, 124695, 132345, 140995, 253791, 422985, 479383, 1268955, 1438149, 2396915, 4314447, 7190745, 21572235]

約数ペア:

[(1, 21572235), (3, 7190745), (5, 4314447), (9, 2396915), (15, 1438149), (17, 1268955), (45, 479383), (51, 422985), (85, 253791), (153, 140995), (163, 132345), (173, 124695), (255, 84597), (489, 44115), (519, 41565), (765, 28199), (815, 26469), (865, 24939), (1467, 14705), (1557, 13855), (2445, 8823), (2595, 8313), (2771, 7785), (2941, 7335)]