21190148

素因数分解:

$2^2\times 7^2\times {\mathrm{73}}^1\times {\mathrm{1481}}^1$

素因数の和:1572

約数の個数: 36

約数和(自身を含む): 43757532

約数和(自身を除く): 22567384

約数列:

[1, 2, 4, 7, 14, 28, 49, 73, 98, 146, 196, 292, 511, 1022, 1481, 2044, 2962, 3577, 5924, 7154, 10367, 14308, 20734, 41468, 72569, 108113, 145138, 216226, 290276, 432452, 756791, 1513582, 3027164, 5297537, 10595074, 21190148]

約数ペア:

[(1, 21190148), (2, 10595074), (4, 5297537), (7, 3027164), (14, 1513582), (28, 756791), (49, 432452), (73, 290276), (98, 216226), (146, 145138), (196, 108113), (292, 72569), (511, 41468), (1022, 20734), (1481, 14308), (2044, 10367), (2962, 7154), (3577, 5924)]