18906405

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{887}}^1$

素因数の和:938

約数の個数: 48

約数和(自身を含む): 36443520

約数和(自身を除く): 17537115

約数列:

[1, 3, 5, 7, 15, 21, 29, 35, 49, 87, 105, 145, 147, 203, 245, 435, 609, 735, 887, 1015, 1421, 2661, 3045, 4263, 4435, 6209, 7105, 13305, 18627, 21315, 25723, 31045, 43463, 77169, 93135, 128615, 130389, 180061, 217315, 385845, 540183, 651945, 900305, 1260427, 2700915, 3781281, 6302135, 18906405]

約数ペア:

[(1, 18906405), (3, 6302135), (5, 3781281), (7, 2700915), (15, 1260427), (21, 900305), (29, 651945), (35, 540183), (49, 385845), (87, 217315), (105, 180061), (145, 130389), (147, 128615), (203, 93135), (245, 77169), (435, 43463), (609, 31045), (735, 25723), (887, 21315), (1015, 18627), (1421, 13305), (2661, 7105), (3045, 6209), (4263, 4435)]