639844558

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{311}}^1\times {\mathrm{509}}^1$

素因数の和:912

約数の個数: 32

約数和(自身を含む): 1008184320

約数和(自身を除く): 368339762

約数列:

[1, 2, 43, 47, 86, 94, 311, 509, 622, 1018, 2021, 4042, 13373, 14617, 21887, 23923, 26746, 29234, 43774, 47846, 158299, 316598, 628531, 1028689, 1257062, 2057378, 6806857, 7440053, 13613714, 14880106, 319922279, 639844558]

約数ペア:

[(1, 639844558), (2, 319922279), (43, 14880106), (47, 13613714), (86, 7440053), (94, 6806857), (311, 2057378), (509, 1257062), (622, 1028689), (1018, 628531), (2021, 316598), (4042, 158299), (13373, 47846), (14617, 43774), (21887, 29234), (23923, 26746)]