21782670

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:210

約数の個数: 128

約数和(自身を含む): 65802240

約数和(自身を除く): 44019570

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 42, 65, 70, 78, 79, 91, 101, 105, 130, 158, 182, 195, 202, 210, 237, 273, 303, 390, 395, 455, 474, 505, 546, 553, 606, 707, 790, 910, 1010, 1027, 1106, 1185, 1313, 1365, 1414, 1515, 1659, 2054, 2121, 2370, 2626, 2730, 2765, 3030, 3081, 3318, 3535, 3939, 4242, 5135, 5530, 6162, 6565, 7070, 7189, 7878, 7979, 8295, 9191, 10270, 10605, 13130, 14378, 15405, 15958, 16590, 18382, 19695, 21210, 21567, 23937, 27573, 30810, 35945, 39390, 39895, 43134, 45955, 47874, 55146, 55853, 71890, 79790, 91910, 103727, 107835, 111706, 119685, 137865, 167559, 207454, 215670, 239370, 275730, 279265, 311181, 335118, 518635, 558530, 622362, 726089, 837795, 1037270, 1452178, 1555905, 1675590, 2178267, 3111810, 3630445, 4356534, 7260890, 10891335, 21782670]

約数ペア:

[(1, 21782670), (2, 10891335), (3, 7260890), (5, 4356534), (6, 3630445), (7, 3111810), (10, 2178267), (13, 1675590), (14, 1555905), (15, 1452178), (21, 1037270), (26, 837795), (30, 726089), (35, 622362), (39, 558530), (42, 518635), (65, 335118), (70, 311181), (78, 279265), (79, 275730), (91, 239370), (101, 215670), (105, 207454), (130, 167559), (158, 137865), (182, 119685), (195, 111706), (202, 107835), (210, 103727), (237, 91910), (273, 79790), (303, 71890), (390, 55853), (395, 55146), (455, 47874), (474, 45955), (505, 43134), (546, 39895), (553, 39390), (606, 35945), (707, 30810), (790, 27573), (910, 23937), (1010, 21567), (1027, 21210), (1106, 19695), (1185, 18382), (1313, 16590), (1365, 15958), (1414, 15405), (1515, 14378), (1659, 13130), (2054, 10605), (2121, 10270), (2370, 9191), (2626, 8295), (2730, 7979), (2765, 7878), (3030, 7189), (3081, 7070), (3318, 6565), (3535, 6162), (3939, 5530), (4242, 5135)]