20778922017

素因数分解:

$3^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{487}}^1\times {\mathrm{3121}}^1$

素因数の和:3659

約数の個数: 72

約数和(自身を含む): 36126085632

約数和(自身を除く): 15347163615

約数列:

[1, 3, 7, 9, 21, 31, 49, 63, 93, 147, 217, 279, 441, 487, 651, 1461, 1519, 1953, 3121, 3409, 4383, 4557, 9363, 10227, 13671, 15097, 21847, 23863, 28089, 30681, 45291, 65541, 71589, 96751, 105679, 135873, 152929, 196623, 214767, 290253, 317037, 458787, 677257, 739753, 870759, 951111, 1376361, 1519927, 2031771, 2219259, 4559781, 4740799, 6095313, 6657777, 10639489, 13679343, 14222397, 31918467, 42667191, 47117737, 74476423, 95755401, 141353211, 223429269, 329824159, 424059633, 670287807, 989472477, 2308769113, 2968417431, 6926307339, 20778922017]

約数ペア:

[(1, 20778922017), (3, 6926307339), (7, 2968417431), (9, 2308769113), (21, 989472477), (31, 670287807), (49, 424059633), (63, 329824159), (93, 223429269), (147, 141353211), (217, 95755401), (279, 74476423), (441, 47117737), (487, 42667191), (651, 31918467), (1461, 14222397), (1519, 13679343), (1953, 10639489), (3121, 6657777), (3409, 6095313), (4383, 4740799), (4557, 4559781), (9363, 2219259), (10227, 2031771), (13671, 1519927), (15097, 1376361), (21847, 951111), (23863, 870759), (28089, 739753), (30681, 677257), (45291, 458787), (65541, 317037), (71589, 290253), (96751, 214767), (105679, 196623), (135873, 152929)]