20347960

素因数分解:

$2^3\times 5^1\times {\mathrm{307}}^1\times {\mathrm{1657}}^1$

素因数の和:1975

約数の個数: 32

約数和(自身を含む): 45959760

約数和(自身を除く): 25611800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 307, 614, 1228, 1535, 1657, 2456, 3070, 3314, 6140, 6628, 8285, 12280, 13256, 16570, 33140, 66280, 508699, 1017398, 2034796, 2543495, 4069592, 5086990, 10173980, 20347960]

約数ペア:

[(1, 20347960), (2, 10173980), (4, 5086990), (5, 4069592), (8, 2543495), (10, 2034796), (20, 1017398), (40, 508699), (307, 66280), (614, 33140), (1228, 16570), (1535, 13256), (1657, 12280), (2456, 8285), (3070, 6628), (3314, 6140)]