21790468

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1$

素因数の和:292

約数の個数: 48

約数和(自身を含む): 45045504

約数和(自身を除く): 23255036

約数列:

[1, 2, 4, 7, 14, 28, 71, 97, 113, 142, 194, 226, 284, 388, 452, 497, 679, 791, 994, 1358, 1582, 1988, 2716, 3164, 6887, 8023, 10961, 13774, 16046, 21922, 27548, 32092, 43844, 48209, 56161, 76727, 96418, 112322, 153454, 192836, 224644, 306908, 778231, 1556462, 3112924, 5447617, 10895234, 21790468]

約数ペア:

[(1, 21790468), (2, 10895234), (4, 5447617), (7, 3112924), (14, 1556462), (28, 778231), (71, 306908), (97, 224644), (113, 192836), (142, 153454), (194, 112322), (226, 96418), (284, 76727), (388, 56161), (452, 48209), (497, 43844), (679, 32092), (791, 27548), (994, 21922), (1358, 16046), (1582, 13774), (1988, 10961), (2716, 8023), (3164, 6887)]