21717608

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{419}}^1$

素因数の和:486

約数の個数: 64

約数和(自身を含む): 48384000

約数和(自身を除く): 26666392

約数列:

[1, 2, 4, 8, 11, 19, 22, 31, 38, 44, 62, 76, 88, 124, 152, 209, 248, 341, 418, 419, 589, 682, 836, 838, 1178, 1364, 1672, 1676, 2356, 2728, 3352, 4609, 4712, 6479, 7961, 9218, 12958, 12989, 15922, 18436, 25916, 25978, 31844, 36872, 51832, 51956, 63688, 87571, 103912, 142879, 175142, 246791, 285758, 350284, 493582, 571516, 700568, 987164, 1143032, 1974328, 2714701, 5429402, 10858804, 21717608]

約数ペア:

[(1, 21717608), (2, 10858804), (4, 5429402), (8, 2714701), (11, 1974328), (19, 1143032), (22, 987164), (31, 700568), (38, 571516), (44, 493582), (62, 350284), (76, 285758), (88, 246791), (124, 175142), (152, 142879), (209, 103912), (248, 87571), (341, 63688), (418, 51956), (419, 51832), (589, 36872), (682, 31844), (836, 25978), (838, 25916), (1178, 18436), (1364, 15922), (1672, 12989), (1676, 12958), (2356, 9218), (2728, 7961), (3352, 6479), (4609, 4712)]