21311446

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{193}}^1$

素因数の和:376

約数の個数: 32

約数和(自身を含む): 35981568

約数和(自身を除く): 14670122

約数列:

[1, 2, 13, 26, 31, 62, 137, 193, 274, 386, 403, 806, 1781, 2509, 3562, 4247, 5018, 5983, 8494, 11966, 26441, 52882, 55211, 77779, 110422, 155558, 343733, 687466, 819671, 1639342, 10655723, 21311446]

約数ペア:

[(1, 21311446), (2, 10655723), (13, 1639342), (26, 819671), (31, 687466), (62, 343733), (137, 155558), (193, 110422), (274, 77779), (386, 55211), (403, 52882), (806, 26441), (1781, 11966), (2509, 8494), (3562, 5983), (4247, 5018)]