678680385

素因数分解:

$3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{157}}^1\times {\mathrm{2971}}^1$

素因数の和:3233

約数の個数: 32

約数和(自身を含む): 1104442752

約数和(自身を除く): 425762367

約数列:

[1, 3, 5, 15, 97, 157, 291, 471, 485, 785, 1455, 2355, 2971, 8913, 14855, 15229, 44565, 45687, 76145, 228435, 288187, 466447, 864561, 1399341, 1440935, 2332235, 4322805, 6996705, 45245359, 135736077, 226226795, 678680385]

約数ペア:

[(1, 678680385), (3, 226226795), (5, 135736077), (15, 45245359), (97, 6996705), (157, 4322805), (291, 2332235), (471, 1440935), (485, 1399341), (785, 864561), (1455, 466447), (2355, 288187), (2971, 228435), (8913, 76145), (14855, 45687), (15229, 44565)]