18988515

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4637}}^1$

素因数の和:4668

約数の個数: 48

約数和(自身を含む): 40517568

約数和(自身を除く): 21529053

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 63, 65, 91, 105, 117, 195, 273, 315, 455, 585, 819, 1365, 4095, 4637, 13911, 23185, 32459, 41733, 60281, 69555, 97377, 162295, 180843, 208665, 292131, 301405, 421967, 486885, 542529, 904215, 1265901, 1460655, 2109835, 2712645, 3797703, 6329505, 18988515]

約数ペア:

[(1, 18988515), (3, 6329505), (5, 3797703), (7, 2712645), (9, 2109835), (13, 1460655), (15, 1265901), (21, 904215), (35, 542529), (39, 486885), (45, 421967), (63, 301405), (65, 292131), (91, 208665), (105, 180843), (117, 162295), (195, 97377), (273, 69555), (315, 60281), (455, 41733), (585, 32459), (819, 23185), (1365, 13911), (4095, 4637)]