20974569

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:182

約数の個数: 64

約数和(自身を含む): 37601280

約数和(自身を除く): 16626711

約数列:

[1, 3, 7, 11, 21, 29, 31, 33, 77, 87, 93, 101, 203, 217, 231, 303, 319, 341, 609, 651, 707, 899, 957, 1023, 1111, 2121, 2233, 2387, 2697, 2929, 3131, 3333, 6293, 6699, 7161, 7777, 8787, 9393, 9889, 18879, 20503, 21917, 23331, 29667, 32219, 34441, 61509, 65751, 69223, 90799, 96657, 103323, 207669, 225533, 241087, 272397, 635593, 676599, 723261, 998789, 1906779, 2996367, 6991523, 20974569]

約数ペア:

[(1, 20974569), (3, 6991523), (7, 2996367), (11, 1906779), (21, 998789), (29, 723261), (31, 676599), (33, 635593), (77, 272397), (87, 241087), (93, 225533), (101, 207669), (203, 103323), (217, 96657), (231, 90799), (303, 69223), (319, 65751), (341, 61509), (609, 34441), (651, 32219), (707, 29667), (899, 23331), (957, 21917), (1023, 20503), (1111, 18879), (2121, 9889), (2233, 9393), (2387, 8787), (2697, 7777), (2929, 7161), (3131, 6699), (3333, 6293)]