19929645

素因数分解:

$3^5\times 5^1\times {\mathrm{47}}^1\times {\mathrm{349}}^1$

素因数の和:416

約数の個数: 48

約数和(自身を含む): 36691200

約数和(自身を除く): 16761555

約数列:

[1, 3, 5, 9, 15, 27, 45, 47, 81, 135, 141, 235, 243, 349, 405, 423, 705, 1047, 1215, 1269, 1745, 2115, 3141, 3807, 5235, 6345, 9423, 11421, 15705, 16403, 19035, 28269, 47115, 49209, 57105, 82015, 84807, 141345, 147627, 246045, 424035, 442881, 738135, 1328643, 2214405, 3985929, 6643215, 19929645]

約数ペア:

[(1, 19929645), (3, 6643215), (5, 3985929), (9, 2214405), (15, 1328643), (27, 738135), (45, 442881), (47, 424035), (81, 246045), (135, 147627), (141, 141345), (235, 84807), (243, 82015), (349, 57105), (405, 49209), (423, 47115), (705, 28269), (1047, 19035), (1215, 16403), (1269, 15705), (1745, 11421), (2115, 9423), (3141, 6345), (3807, 5235)]