20156194928

素因数分解:

$2^4\times {\mathrm{97}}^1\times {\mathrm{619}}^1\times {\mathrm{20981}}^1$

素因数の和:21705

約数の個数: 40

約数和(自身を含む): 39520855920

約数和(自身を除く): 19364660992

約数列:

[1, 2, 4, 8, 16, 97, 194, 388, 619, 776, 1238, 1552, 2476, 4952, 9904, 20981, 41962, 60043, 83924, 120086, 167848, 240172, 335696, 480344, 960688, 2035157, 4070314, 8140628, 12987239, 16281256, 25974478, 32562512, 51948956, 103897912, 207795824, 1259762183, 2519524366, 5039048732, 10078097464, 20156194928]

約数ペア:

[(1, 20156194928), (2, 10078097464), (4, 5039048732), (8, 2519524366), (16, 1259762183), (97, 207795824), (194, 103897912), (388, 51948956), (619, 32562512), (776, 25974478), (1238, 16281256), (1552, 12987239), (2476, 8140628), (4952, 4070314), (9904, 2035157), (20981, 960688), (41962, 480344), (60043, 335696), (83924, 240172), (120086, 167848)]