72897040

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{21191}}^1$

素因数の和:21247

約数の個数: 40

約数和(自身を含む): 173435328

約数和(自身を除く): 100538288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 21191, 42382, 84764, 105955, 169528, 211910, 339056, 423820, 847640, 911213, 1695280, 1822426, 3644852, 4556065, 7289704, 9112130, 14579408, 18224260, 36448520, 72897040]

約数ペア:

[(1, 72897040), (2, 36448520), (4, 18224260), (5, 14579408), (8, 9112130), (10, 7289704), (16, 4556065), (20, 3644852), (40, 1822426), (43, 1695280), (80, 911213), (86, 847640), (172, 423820), (215, 339056), (344, 211910), (430, 169528), (688, 105955), (860, 84764), (1720, 42382), (3440, 21191)]