15720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{131}}^1$

素因数の和:145

約数の個数: 32

約数和(自身を含む): 47520

約数和(自身を除く): 31800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 131, 262, 393, 524, 655, 786, 1048, 1310, 1572, 1965, 2620, 3144, 3930, 5240, 7860, 15720]

約数ペア:

[(1, 15720), (2, 7860), (3, 5240), (4, 3930), (5, 3144), (6, 2620), (8, 1965), (10, 1572), (12, 1310), (15, 1048), (20, 786), (24, 655), (30, 524), (40, 393), (60, 262), (120, 131)]