21673725

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{191}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 38568960

約数和(自身を除く): 16895235

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 89, 191, 255, 267, 425, 445, 573, 955, 1275, 1335, 1513, 2225, 2865, 3247, 4539, 4775, 6675, 7565, 9741, 14325, 16235, 16999, 22695, 37825, 48705, 50997, 81175, 84995, 113475, 243525, 254985, 288983, 424975, 866949, 1274925, 1444915, 4334745, 7224575, 21673725]

約数ペア:

[(1, 21673725), (3, 7224575), (5, 4334745), (15, 1444915), (17, 1274925), (25, 866949), (51, 424975), (75, 288983), (85, 254985), (89, 243525), (191, 113475), (255, 84995), (267, 81175), (425, 50997), (445, 48705), (573, 37825), (955, 22695), (1275, 16999), (1335, 16235), (1513, 14325), (2225, 9741), (2865, 7565), (3247, 6675), (4539, 4775)]