21409508740

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{421}}^1\times {\mathrm{62017}}^1$

素因数の和:62488

約数の個数: 48

約数和(自身を含む): 46166695344

約数和(自身を除く): 24757186604

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 421, 820, 842, 1684, 2105, 4210, 8420, 17261, 34522, 62017, 69044, 86305, 124034, 172610, 248068, 310085, 345220, 620170, 1240340, 2542697, 5085394, 10170788, 12713485, 25426970, 26109157, 50853940, 52218314, 104436628, 130545785, 261091570, 522183140, 1070475437, 2140950874, 4281901748, 5352377185, 10704754370, 21409508740]

約数ペア:

[(1, 21409508740), (2, 10704754370), (4, 5352377185), (5, 4281901748), (10, 2140950874), (20, 1070475437), (41, 522183140), (82, 261091570), (164, 130545785), (205, 104436628), (410, 52218314), (421, 50853940), (820, 26109157), (842, 25426970), (1684, 12713485), (2105, 10170788), (4210, 5085394), (8420, 2542697), (17261, 1240340), (34522, 620170), (62017, 345220), (69044, 310085), (86305, 248068), (124034, 172610)]