19964520

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{55457}}^1$

素因数の和:55474

約数の個数: 48

約数和(自身を含む): 64885860

約数和(自身を除く): 44921340

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 55457, 110914, 166371, 221828, 277285, 332742, 443656, 499113, 554570, 665484, 831855, 998226, 1109140, 1330968, 1663710, 1996452, 2218280, 2495565, 3327420, 3992904, 4991130, 6654840, 9982260, 19964520]

約数ペア:

[(1, 19964520), (2, 9982260), (3, 6654840), (4, 4991130), (5, 3992904), (6, 3327420), (8, 2495565), (9, 2218280), (10, 1996452), (12, 1663710), (15, 1330968), (18, 1109140), (20, 998226), (24, 831855), (30, 665484), (36, 554570), (40, 499113), (45, 443656), (60, 332742), (72, 277285), (90, 221828), (120, 166371), (180, 110914), (360, 55457)]