28912905

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{263}}^1\times {\mathrm{349}}^1$

素因数の和:630

約数の個数: 48

約数和(自身を含む): 57657600

約数和(自身を除く): 28744695

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 263, 315, 349, 789, 1047, 1315, 1745, 1841, 2367, 2443, 3141, 3945, 5235, 5523, 7329, 9205, 11835, 12215, 15705, 16569, 21987, 27615, 36645, 82845, 91787, 109935, 275361, 458935, 642509, 826083, 1376805, 1927527, 3212545, 4130415, 5782581, 9637635, 28912905]

約数ペア:

[(1, 28912905), (3, 9637635), (5, 5782581), (7, 4130415), (9, 3212545), (15, 1927527), (21, 1376805), (35, 826083), (45, 642509), (63, 458935), (105, 275361), (263, 109935), (315, 91787), (349, 82845), (789, 36645), (1047, 27615), (1315, 21987), (1745, 16569), (1841, 15705), (2367, 12215), (2443, 11835), (3141, 9205), (3945, 7329), (5235, 5523)]