20187706

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{307}}^1$

素因数の和:395

約数の個数: 48

約数和(自身を含む): 39184992

約数和(自身を除く): 18997286

約数列:

[1, 2, 7, 11, 14, 22, 49, 61, 77, 98, 122, 154, 307, 427, 539, 614, 671, 854, 1078, 1342, 2149, 2989, 3377, 4298, 4697, 5978, 6754, 9394, 15043, 18727, 23639, 30086, 32879, 37454, 47278, 65758, 131089, 165473, 205997, 262178, 330946, 411994, 917623, 1441979, 1835246, 2883958, 10093853, 20187706]

約数ペア:

[(1, 20187706), (2, 10093853), (7, 2883958), (11, 1835246), (14, 1441979), (22, 917623), (49, 411994), (61, 330946), (77, 262178), (98, 205997), (122, 165473), (154, 131089), (307, 65758), (427, 47278), (539, 37454), (614, 32879), (671, 30086), (854, 23639), (1078, 18727), (1342, 15043), (2149, 9394), (2989, 6754), (3377, 5978), (4298, 4697)]