820972112

素因数分解:

$2^4\times {\mathrm{199}}^1\times {\mathrm{401}}^1\times {\mathrm{643}}^1$

素因数の和:1251

約数の個数: 40

約数和(自身を含む): 1605105600

約数和(自身を除く): 784133488

約数列:

[1, 2, 4, 8, 16, 199, 398, 401, 643, 796, 802, 1286, 1592, 1604, 2572, 3184, 3208, 5144, 6416, 10288, 79799, 127957, 159598, 255914, 257843, 319196, 511828, 515686, 638392, 1023656, 1031372, 1276784, 2047312, 2062744, 4125488, 51310757, 102621514, 205243028, 410486056, 820972112]

約数ペア:

[(1, 820972112), (2, 410486056), (4, 205243028), (8, 102621514), (16, 51310757), (199, 4125488), (398, 2062744), (401, 2047312), (643, 1276784), (796, 1031372), (802, 1023656), (1286, 638392), (1592, 515686), (1604, 511828), (2572, 319196), (3184, 257843), (3208, 255914), (5144, 159598), (6416, 127957), (10288, 79799)]