21754772

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{227}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 43794240

約数和(自身を除く): 22039468

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 97, 194, 227, 247, 388, 454, 494, 908, 988, 1261, 1843, 2522, 2951, 3686, 4313, 5044, 5902, 7372, 8626, 11804, 17252, 22019, 23959, 44038, 47918, 56069, 88076, 95836, 112138, 224276, 286247, 418361, 572494, 836722, 1144988, 1673444, 5438693, 10877386, 21754772]

約数ペア:

[(1, 21754772), (2, 10877386), (4, 5438693), (13, 1673444), (19, 1144988), (26, 836722), (38, 572494), (52, 418361), (76, 286247), (97, 224276), (194, 112138), (227, 95836), (247, 88076), (388, 56069), (454, 47918), (494, 44038), (908, 23959), (988, 22019), (1261, 17252), (1843, 11804), (2522, 8626), (2951, 7372), (3686, 5902), (4313, 5044)]