21918225

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{503}}^1$

素因数の和:606

約数の個数: 48

約数和(自身を含む): 41997312

約数和(自身を除く): 20079087

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 83, 105, 175, 249, 415, 503, 525, 581, 1245, 1509, 1743, 2075, 2515, 2905, 3521, 6225, 7545, 8715, 10563, 12575, 14525, 17605, 37725, 41749, 43575, 52815, 88025, 125247, 208745, 264075, 292243, 626235, 876729, 1043725, 1461215, 3131175, 4383645, 7306075, 21918225]

約数ペア:

[(1, 21918225), (3, 7306075), (5, 4383645), (7, 3131175), (15, 1461215), (21, 1043725), (25, 876729), (35, 626235), (75, 292243), (83, 264075), (105, 208745), (175, 125247), (249, 88025), (415, 52815), (503, 43575), (525, 41749), (581, 37725), (1245, 17605), (1509, 14525), (1743, 12575), (2075, 10563), (2515, 8715), (2905, 7545), (3521, 6225)]