21270830

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{1097}}^1$

素因数の和:1388

約数の個数: 32

約数和(自身を含む): 43955136

約数和(自身を除く): 22684306

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 277, 554, 1097, 1385, 1939, 2194, 2770, 3878, 5485, 7679, 9695, 10970, 15358, 19390, 38395, 76790, 303869, 607738, 1519345, 2127083, 3038690, 4254166, 10635415, 21270830]

約数ペア:

[(1, 21270830), (2, 10635415), (5, 4254166), (7, 3038690), (10, 2127083), (14, 1519345), (35, 607738), (70, 303869), (277, 76790), (554, 38395), (1097, 19390), (1385, 15358), (1939, 10970), (2194, 9695), (2770, 7679), (3878, 5485)]