21144435

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{439}}^1$

素因数の和:492

約数の個数: 48

約数和(自身を含む): 38649600

約数和(自身を除く): 17505165

約数列:

[1, 3, 5, 13, 15, 19, 39, 57, 65, 95, 169, 195, 247, 285, 439, 507, 741, 845, 1235, 1317, 2195, 2535, 3211, 3705, 5707, 6585, 8341, 9633, 16055, 17121, 25023, 28535, 41705, 48165, 74191, 85605, 108433, 125115, 222573, 325299, 370955, 542165, 1112865, 1409629, 1626495, 4228887, 7048145, 21144435]

約数ペア:

[(1, 21144435), (3, 7048145), (5, 4228887), (13, 1626495), (15, 1409629), (19, 1112865), (39, 542165), (57, 370955), (65, 325299), (95, 222573), (169, 125115), (195, 108433), (247, 85605), (285, 74191), (439, 48165), (507, 41705), (741, 28535), (845, 25023), (1235, 17121), (1317, 16055), (2195, 9633), (2535, 8341), (3211, 6585), (3705, 5707)]