21168740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2707}}^1$

素因数の和:2756

約数の個数: 48

約数和(自身を含む): 49133952

約数和(自身を除く): 27965212

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 34, 46, 68, 85, 92, 115, 170, 230, 340, 391, 460, 782, 1564, 1955, 2707, 3910, 5414, 7820, 10828, 13535, 27070, 46019, 54140, 62261, 92038, 124522, 184076, 230095, 249044, 311305, 460190, 622610, 920380, 1058437, 1245220, 2116874, 4233748, 5292185, 10584370, 21168740]

約数ペア:

[(1, 21168740), (2, 10584370), (4, 5292185), (5, 4233748), (10, 2116874), (17, 1245220), (20, 1058437), (23, 920380), (34, 622610), (46, 460190), (68, 311305), (85, 249044), (92, 230095), (115, 184076), (170, 124522), (230, 92038), (340, 62261), (391, 54140), (460, 46019), (782, 27070), (1564, 13535), (1955, 10828), (2707, 7820), (3910, 5414)]