21048105

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^2\times {\mathrm{23}}^1$

素因数の和:95

約数の個数: 72

約数和(自身を含む): 40160448

約数和(自身を除く): 19112343

約数列:

[1, 3, 5, 13, 15, 19, 23, 39, 57, 65, 69, 95, 115, 169, 195, 247, 285, 299, 345, 361, 437, 507, 741, 845, 897, 1083, 1235, 1311, 1495, 1805, 2185, 2535, 3211, 3705, 3887, 4485, 4693, 5415, 5681, 6555, 8303, 9633, 11661, 14079, 16055, 17043, 19435, 23465, 24909, 28405, 41515, 48165, 58305, 61009, 70395, 73853, 85215, 107939, 124545, 183027, 221559, 305045, 323817, 369265, 539695, 915135, 1107795, 1403207, 1619085, 4209621, 7016035, 21048105]

約数ペア:

[(1, 21048105), (3, 7016035), (5, 4209621), (13, 1619085), (15, 1403207), (19, 1107795), (23, 915135), (39, 539695), (57, 369265), (65, 323817), (69, 305045), (95, 221559), (115, 183027), (169, 124545), (195, 107939), (247, 85215), (285, 73853), (299, 70395), (345, 61009), (361, 58305), (437, 48165), (507, 41515), (741, 28405), (845, 24909), (897, 23465), (1083, 19435), (1235, 17043), (1311, 16055), (1495, 14079), (1805, 11661), (2185, 9633), (2535, 8303), (3211, 6555), (3705, 5681), (3887, 5415), (4485, 4693)]