78991960

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{42017}}^1$

素因数の和:42075

約数の個数: 32

約数和(自身を含む): 181517760

約数和(自身を除く): 102525800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 42017, 84034, 168068, 210085, 336136, 420170, 840340, 1680680, 1974799, 3949598, 7899196, 9873995, 15798392, 19747990, 39495980, 78991960]

約数ペア:

[(1, 78991960), (2, 39495980), (4, 19747990), (5, 15798392), (8, 9873995), (10, 7899196), (20, 3949598), (40, 1974799), (47, 1680680), (94, 840340), (188, 420170), (235, 336136), (376, 210085), (470, 168068), (940, 84034), (1880, 42017)]