21391012

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 41150592

約数和(自身を除く): 19759580

約数列:

[1, 2, 4, 23, 41, 46, 53, 82, 92, 106, 107, 164, 212, 214, 428, 943, 1219, 1886, 2173, 2438, 2461, 3772, 4346, 4387, 4876, 4922, 5671, 8692, 8774, 9844, 11342, 17548, 22684, 49979, 99958, 100901, 130433, 199916, 201802, 232511, 260866, 403604, 465022, 521732, 930044, 5347753, 10695506, 21391012]

約数ペア:

[(1, 21391012), (2, 10695506), (4, 5347753), (23, 930044), (41, 521732), (46, 465022), (53, 403604), (82, 260866), (92, 232511), (106, 201802), (107, 199916), (164, 130433), (212, 100901), (214, 99958), (428, 49979), (943, 22684), (1219, 17548), (1886, 11342), (2173, 9844), (2438, 8774), (2461, 8692), (3772, 5671), (4346, 4922), (4387, 4876)]