20808212656

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{65719}}^1$

素因数の和:66002

約数の個数: 80

約数和(自身を含む): 50460341760

約数和(自身を除く): 29652129104

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 88, 112, 154, 176, 257, 308, 514, 616, 1028, 1232, 1799, 2056, 2827, 3598, 4112, 5654, 7196, 11308, 14392, 19789, 22616, 28784, 39578, 45232, 65719, 79156, 131438, 158312, 262876, 316624, 460033, 525752, 722909, 920066, 1051504, 1445818, 1840132, 2891636, 3680264, 5060363, 5783272, 7360528, 10120726, 11566544, 16889783, 20241452, 33779566, 40482904, 67559132, 80965808, 118228481, 135118264, 185787613, 236456962, 270236528, 371575226, 472913924, 743150452, 945827848, 1300513291, 1486300904, 1891655696, 2601026582, 2972601808, 5202053164, 10404106328, 20808212656]

約数ペア:

[(1, 20808212656), (2, 10404106328), (4, 5202053164), (7, 2972601808), (8, 2601026582), (11, 1891655696), (14, 1486300904), (16, 1300513291), (22, 945827848), (28, 743150452), (44, 472913924), (56, 371575226), (77, 270236528), (88, 236456962), (112, 185787613), (154, 135118264), (176, 118228481), (257, 80965808), (308, 67559132), (514, 40482904), (616, 33779566), (1028, 20241452), (1232, 16889783), (1799, 11566544), (2056, 10120726), (2827, 7360528), (3598, 5783272), (4112, 5060363), (5654, 3680264), (7196, 2891636), (11308, 1840132), (14392, 1445818), (19789, 1051504), (22616, 920066), (28784, 722909), (39578, 525752), (45232, 460033), (65719, 316624), (79156, 262876), (131438, 158312)]