19984016

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{3313}}^1$

素因数の和:3363

約数の個数: 40

約数和(自身を含む): 43148280

約数和(自身を除く): 23164264

約数列:

[1, 2, 4, 8, 13, 16, 26, 29, 52, 58, 104, 116, 208, 232, 377, 464, 754, 1508, 3016, 3313, 6032, 6626, 13252, 26504, 43069, 53008, 86138, 96077, 172276, 192154, 344552, 384308, 689104, 768616, 1249001, 1537232, 2498002, 4996004, 9992008, 19984016]

約数ペア:

[(1, 19984016), (2, 9992008), (4, 4996004), (8, 2498002), (13, 1537232), (16, 1249001), (26, 768616), (29, 689104), (52, 384308), (58, 344552), (104, 192154), (116, 172276), (208, 96077), (232, 86138), (377, 53008), (464, 43069), (754, 26504), (1508, 13252), (3016, 6626), (3313, 6032)]