21445515

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5237}}^1$

素因数の和:5268

約数の個数: 48

約数和(自身を含む): 45759168

約数和(自身を除く): 24313653

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, 5237, 15711, 26185, 36659, 47133, 68081, 78555, 109977, 183295, 204243, 235665, 329931, 340405, 476567, 549885, 612729, 1021215, 1429701, 1649655, 2382835, 3063645, 4289103, 7148505, 21445515]

約数ペア:

[(1, 21445515), (3, 7148505), (5, 4289103), (7, 3063645), (9, 2382835), (13, 1649655), (15, 1429701), (21, 1021215), (35, 612729), (39, 549885), (45, 476567), (63, 340405), (65, 329931), (91, 235665), (105, 204243), (117, 183295), (195, 109977), (273, 78555), (315, 68081), (455, 47133), (585, 36659), (819, 26185), (1365, 15711), (4095, 5237)]