27985005

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{461}}^1$

素因数の和:562

約数の個数: 48

約数和(自身を含む): 51891840

約数和(自身を除く): 23906835

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 71, 95, 171, 213, 285, 355, 461, 639, 855, 1065, 1349, 1383, 2305, 3195, 4047, 4149, 6745, 6915, 8759, 12141, 20235, 20745, 26277, 32731, 43795, 60705, 78831, 98193, 131385, 163655, 294579, 394155, 490965, 621889, 1472895, 1865667, 3109445, 5597001, 9328335, 27985005]

約数ペア:

[(1, 27985005), (3, 9328335), (5, 5597001), (9, 3109445), (15, 1865667), (19, 1472895), (45, 621889), (57, 490965), (71, 394155), (95, 294579), (171, 163655), (213, 131385), (285, 98193), (355, 78831), (461, 60705), (639, 43795), (855, 32731), (1065, 26277), (1349, 20745), (1383, 20235), (2305, 12141), (3195, 8759), (4047, 6915), (4149, 6745)]