20039960

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{6863}}^1$

素因数の和:6947

約数の個数: 32

約数和(自身を含む): 45714240

約数和(自身を除く): 25674280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 6863, 13726, 27452, 34315, 54904, 68630, 137260, 274520, 500999, 1001998, 2003996, 2504995, 4007992, 5009990, 10019980, 20039960]

約数ペア:

[(1, 20039960), (2, 10019980), (4, 5009990), (5, 4007992), (8, 2504995), (10, 2003996), (20, 1001998), (40, 500999), (73, 274520), (146, 137260), (292, 68630), (365, 54904), (584, 34315), (730, 27452), (1460, 13726), (2920, 6863)]