21120375

素因数分解:

$3^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{3313}}^1$

素因数の和:3348

約数の個数: 32

約数和(自身を含む): 37222848

約数和(自身を除く): 16102473

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 125, 255, 375, 425, 1275, 2125, 3313, 6375, 9939, 16565, 49695, 56321, 82825, 168963, 248475, 281605, 414125, 844815, 1242375, 1408025, 4224075, 7040125, 21120375]

約数ペア:

[(1, 21120375), (3, 7040125), (5, 4224075), (15, 1408025), (17, 1242375), (25, 844815), (51, 414125), (75, 281605), (85, 248475), (125, 168963), (255, 82825), (375, 56321), (425, 49695), (1275, 16565), (2125, 9939), (3313, 6375)]