21283325

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 32795520

約数和(自身を除く): 11512195

約数列:

[1, 5, 7, 19, 25, 35, 37, 95, 133, 173, 175, 185, 259, 475, 665, 703, 865, 925, 1211, 1295, 3287, 3325, 3515, 4325, 4921, 6055, 6401, 6475, 16435, 17575, 23009, 24605, 30275, 32005, 44807, 82175, 115045, 121619, 123025, 160025, 224035, 575225, 608095, 851333, 1120175, 3040475, 4256665, 21283325]

約数ペア:

[(1, 21283325), (5, 4256665), (7, 3040475), (19, 1120175), (25, 851333), (35, 608095), (37, 575225), (95, 224035), (133, 160025), (173, 123025), (175, 121619), (185, 115045), (259, 82175), (475, 44807), (665, 32005), (703, 30275), (865, 24605), (925, 23009), (1211, 17575), (1295, 16435), (3287, 6475), (3325, 6401), (3515, 6055), (4325, 4921)]