2549968125

素因数分解:

$3^1\times 5^4\times {\mathrm{17}}^1\times {\mathrm{79999}}^1$

素因数の和:80039

約数の個数: 40

約数和(自身を含む): 4498560000

約数和(自身を除く): 1948591875

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 125, 255, 375, 425, 625, 1275, 1875, 2125, 6375, 10625, 31875, 79999, 239997, 399995, 1199985, 1359983, 1999975, 4079949, 5999925, 6799915, 9999875, 20399745, 29999625, 33999575, 49999375, 101998725, 149998125, 169997875, 509993625, 849989375, 2549968125]

約数ペア:

[(1, 2549968125), (3, 849989375), (5, 509993625), (15, 169997875), (17, 149998125), (25, 101998725), (51, 49999375), (75, 33999575), (85, 29999625), (125, 20399745), (255, 9999875), (375, 6799915), (425, 5999925), (625, 4079949), (1275, 1999975), (1875, 1359983), (2125, 1199985), (6375, 399995), (10625, 239997), (31875, 79999)]