20808645

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:230

約数の個数: 64

約数和(自身を含む): 39916800

約数和(自身を除く): 19108155

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 55, 65, 89, 109, 143, 165, 195, 267, 327, 429, 445, 545, 715, 979, 1157, 1199, 1335, 1417, 1635, 2145, 2937, 3471, 3597, 4251, 4895, 5785, 5995, 7085, 9701, 12727, 14685, 15587, 17355, 17985, 21255, 29103, 38181, 46761, 48505, 63635, 77935, 106711, 126113, 145515, 190905, 233805, 320133, 378339, 533555, 630565, 1387243, 1600665, 1891695, 4161729, 6936215, 20808645]

約数ペア:

[(1, 20808645), (3, 6936215), (5, 4161729), (11, 1891695), (13, 1600665), (15, 1387243), (33, 630565), (39, 533555), (55, 378339), (65, 320133), (89, 233805), (109, 190905), (143, 145515), (165, 126113), (195, 106711), (267, 77935), (327, 63635), (429, 48505), (445, 46761), (545, 38181), (715, 29103), (979, 21255), (1157, 17985), (1199, 17355), (1335, 15587), (1417, 14685), (1635, 12727), (2145, 9701), (2937, 7085), (3471, 5995), (3597, 5785), (4251, 4895)]