21770980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{211}}^1$

素因数の和:305

約数の個数: 96

約数和(自身を含む): 58125312

約数和(自身を除く): 36354332

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 67, 70, 77, 110, 134, 140, 154, 211, 220, 268, 308, 335, 385, 422, 469, 670, 737, 770, 844, 938, 1055, 1340, 1474, 1477, 1540, 1876, 2110, 2321, 2345, 2948, 2954, 3685, 4220, 4642, 4690, 5159, 5908, 7370, 7385, 9284, 9380, 10318, 11605, 14137, 14740, 14770, 16247, 20636, 23210, 25795, 28274, 29540, 32494, 46420, 51590, 56548, 64988, 70685, 81235, 98959, 103180, 141370, 155507, 162470, 197918, 282740, 311014, 324940, 395836, 494795, 622028, 777535, 989590, 1088549, 1555070, 1979180, 2177098, 3110140, 4354196, 5442745, 10885490, 21770980]

約数ペア:

[(1, 21770980), (2, 10885490), (4, 5442745), (5, 4354196), (7, 3110140), (10, 2177098), (11, 1979180), (14, 1555070), (20, 1088549), (22, 989590), (28, 777535), (35, 622028), (44, 494795), (55, 395836), (67, 324940), (70, 311014), (77, 282740), (110, 197918), (134, 162470), (140, 155507), (154, 141370), (211, 103180), (220, 98959), (268, 81235), (308, 70685), (335, 64988), (385, 56548), (422, 51590), (469, 46420), (670, 32494), (737, 29540), (770, 28274), (844, 25795), (938, 23210), (1055, 20636), (1340, 16247), (1474, 14770), (1477, 14740), (1540, 14137), (1876, 11605), (2110, 10318), (2321, 9380), (2345, 9284), (2948, 7385), (2954, 7370), (3685, 5908), (4220, 5159), (4642, 4690)]