398641428

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{6781}}^1$

素因数の和:6885

約数の個数: 72

約数和(自身を含む): 1066455936

約数和(自身を除く): 667814508

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 69, 71, 92, 138, 142, 207, 213, 276, 284, 414, 426, 639, 828, 852, 1278, 1633, 2556, 3266, 4899, 6532, 6781, 9798, 13562, 14697, 19596, 20343, 27124, 29394, 40686, 58788, 61029, 81372, 122058, 155963, 244116, 311926, 467889, 481451, 623852, 935778, 962902, 1403667, 1444353, 1871556, 1925804, 2807334, 2888706, 4333059, 5614668, 5777412, 8666118, 11073373, 17332236, 22146746, 33220119, 44293492, 66440238, 99660357, 132880476, 199320714, 398641428]

約数ペア:

[(1, 398641428), (2, 199320714), (3, 132880476), (4, 99660357), (6, 66440238), (9, 44293492), (12, 33220119), (18, 22146746), (23, 17332236), (36, 11073373), (46, 8666118), (69, 5777412), (71, 5614668), (92, 4333059), (138, 2888706), (142, 2807334), (207, 1925804), (213, 1871556), (276, 1444353), (284, 1403667), (414, 962902), (426, 935778), (639, 623852), (828, 481451), (852, 467889), (1278, 311926), (1633, 244116), (2556, 155963), (3266, 122058), (4899, 81372), (6532, 61029), (6781, 58788), (9798, 40686), (13562, 29394), (14697, 27124), (19596, 20343)]