21878520784

素因数分解:

$2^4\times {\mathrm{137}}^1\times {\mathrm{1607}}^1\times {\mathrm{6211}}^1$

素因数の和:7963

約数の個数: 40

約数和(自身を含む): 42732497088

約数和(自身を除く): 20853976304

約数列:

[1, 2, 4, 8, 16, 137, 274, 548, 1096, 1607, 2192, 3214, 6211, 6428, 12422, 12856, 24844, 25712, 49688, 99376, 220159, 440318, 850907, 880636, 1701814, 1761272, 3403628, 3522544, 6807256, 9981077, 13614512, 19962154, 39924308, 79848616, 159697232, 1367407549, 2734815098, 5469630196, 10939260392, 21878520784]

約数ペア:

[(1, 21878520784), (2, 10939260392), (4, 5469630196), (8, 2734815098), (16, 1367407549), (137, 159697232), (274, 79848616), (548, 39924308), (1096, 19962154), (1607, 13614512), (2192, 9981077), (3214, 6807256), (6211, 3522544), (6428, 3403628), (12422, 1761272), (12856, 1701814), (24844, 880636), (25712, 850907), (49688, 440318), (99376, 220159)]