199983920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{147047}}^1$

素因数の和:147077

約数の個数: 40

約数和(自身を含む): 492316704

約数和(自身を除く): 292332784

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 147047, 294094, 588188, 735235, 1176376, 1470470, 2352752, 2499799, 2940940, 4999598, 5881880, 9999196, 11763760, 12498995, 19998392, 24997990, 39996784, 49995980, 99991960, 199983920]

約数ペア:

[(1, 199983920), (2, 99991960), (4, 49995980), (5, 39996784), (8, 24997990), (10, 19998392), (16, 12498995), (17, 11763760), (20, 9999196), (34, 5881880), (40, 4999598), (68, 2940940), (80, 2499799), (85, 2352752), (136, 1470470), (170, 1176376), (272, 735235), (340, 588188), (680, 294094), (1360, 147047)]