21791840

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{19457}}^1$

素因数の和:19479

約数の個数: 48

約数和(自身を含む): 58840992

約数和(自身を除く): 37049152

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 19457, 38914, 77828, 97285, 136199, 155656, 194570, 272398, 311312, 389140, 544796, 622624, 680995, 778280, 1089592, 1361990, 1556560, 2179184, 2723980, 3113120, 4358368, 5447960, 10895920, 21791840]

約数ペア:

[(1, 21791840), (2, 10895920), (4, 5447960), (5, 4358368), (7, 3113120), (8, 2723980), (10, 2179184), (14, 1556560), (16, 1361990), (20, 1089592), (28, 778280), (32, 680995), (35, 622624), (40, 544796), (56, 389140), (70, 311312), (80, 272398), (112, 194570), (140, 155656), (160, 136199), (224, 97285), (280, 77828), (560, 38914), (1120, 19457)]