81342744

素因数分解:

$2^3\times 3^1\times 7^2\times {\mathrm{263}}^2$

素因数の和:549

約数の個数: 72

約数和(自身を含む): 237460860

約数和(自身を除く): 156118116

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 49, 56, 84, 98, 147, 168, 196, 263, 294, 392, 526, 588, 789, 1052, 1176, 1578, 1841, 2104, 3156, 3682, 5523, 6312, 7364, 11046, 12887, 14728, 22092, 25774, 38661, 44184, 51548, 69169, 77322, 103096, 138338, 154644, 207507, 276676, 309288, 415014, 484183, 553352, 830028, 968366, 1452549, 1660056, 1936732, 2905098, 3389281, 3873464, 5810196, 6778562, 10167843, 11620392, 13557124, 20335686, 27114248, 40671372, 81342744]

約数ペア:

[(1, 81342744), (2, 40671372), (3, 27114248), (4, 20335686), (6, 13557124), (7, 11620392), (8, 10167843), (12, 6778562), (14, 5810196), (21, 3873464), (24, 3389281), (28, 2905098), (42, 1936732), (49, 1660056), (56, 1452549), (84, 968366), (98, 830028), (147, 553352), (168, 484183), (196, 415014), (263, 309288), (294, 276676), (392, 207507), (526, 154644), (588, 138338), (789, 103096), (1052, 77322), (1176, 69169), (1578, 51548), (1841, 44184), (2104, 38661), (3156, 25774), (3682, 22092), (5523, 14728), (6312, 12887), (7364, 11046)]