61878920

素因数分解:

$2^3\times 5^1\times {\mathrm{307}}^1\times {\mathrm{5039}}^1$

素因数の和:5357

約数の個数: 32

約数和(自身を含む): 139708800

約数和(自身を除く): 77829880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 307, 614, 1228, 1535, 2456, 3070, 5039, 6140, 10078, 12280, 20156, 25195, 40312, 50390, 100780, 201560, 1546973, 3093946, 6187892, 7734865, 12375784, 15469730, 30939460, 61878920]

約数ペア:

[(1, 61878920), (2, 30939460), (4, 15469730), (5, 12375784), (8, 7734865), (10, 6187892), (20, 3093946), (40, 1546973), (307, 201560), (614, 100780), (1228, 50390), (1535, 40312), (2456, 25195), (3070, 20156), (5039, 12280), (6140, 10078)]