21471720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{178931}}^1$

素因数の和:178945

約数の個数: 32

約数和(自身を含む): 64415520

約数和(自身を除く): 42943800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 178931, 357862, 536793, 715724, 894655, 1073586, 1431448, 1789310, 2147172, 2683965, 3578620, 4294344, 5367930, 7157240, 10735860, 21471720]

約数ペア:

[(1, 21471720), (2, 10735860), (3, 7157240), (4, 5367930), (5, 4294344), (6, 3578620), (8, 2683965), (10, 2147172), (12, 1789310), (15, 1431448), (20, 1073586), (24, 894655), (30, 715724), (40, 536793), (60, 357862), (120, 178931)]