68999720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{42073}}^1$

素因数の和:42125

約数の個数: 32

約数和(自身を含む): 159039720

約数和(自身を除く): 90040000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 42073, 84146, 168292, 210365, 336584, 420730, 841460, 1682920, 1724993, 3449986, 6899972, 8624965, 13799944, 17249930, 34499860, 68999720]

約数ペア:

[(1, 68999720), (2, 34499860), (4, 17249930), (5, 13799944), (8, 8624965), (10, 6899972), (20, 3449986), (40, 1724993), (41, 1682920), (82, 841460), (164, 420730), (205, 336584), (328, 210365), (410, 168292), (820, 84146), (1640, 42073)]