19538025

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{691}}^1$

素因数の和:746

約数の個数: 48

約数和(自身を含む): 36039360

約数和(自身を除く): 16501335

約数列:

[1, 3, 5, 13, 15, 25, 29, 39, 65, 75, 87, 145, 195, 325, 377, 435, 691, 725, 975, 1131, 1885, 2073, 2175, 3455, 5655, 8983, 9425, 10365, 17275, 20039, 26949, 28275, 44915, 51825, 60117, 100195, 134745, 224575, 260507, 300585, 500975, 673725, 781521, 1302535, 1502925, 3907605, 6512675, 19538025]

約数ペア:

[(1, 19538025), (3, 6512675), (5, 3907605), (13, 1502925), (15, 1302535), (25, 781521), (29, 673725), (39, 500975), (65, 300585), (75, 260507), (87, 224575), (145, 134745), (195, 100195), (325, 60117), (377, 51825), (435, 44915), (691, 28275), (725, 26949), (975, 20039), (1131, 17275), (1885, 10365), (2073, 9425), (2175, 8983), (3455, 5655)]