20980656

素因数分解:

$2^4\times 3^2\times {\mathrm{367}}^1\times {\mathrm{397}}^1$

素因数の和:778

約数の個数: 60

約数和(自身を含む): 59024992

約数和(自身を除く): 38044336

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 367, 397, 734, 794, 1101, 1191, 1468, 1588, 2202, 2382, 2936, 3176, 3303, 3573, 4404, 4764, 5872, 6352, 6606, 7146, 8808, 9528, 13212, 14292, 17616, 19056, 26424, 28584, 52848, 57168, 145699, 291398, 437097, 582796, 874194, 1165592, 1311291, 1748388, 2331184, 2622582, 3496776, 5245164, 6993552, 10490328, 20980656]

約数ペア:

[(1, 20980656), (2, 10490328), (3, 6993552), (4, 5245164), (6, 3496776), (8, 2622582), (9, 2331184), (12, 1748388), (16, 1311291), (18, 1165592), (24, 874194), (36, 582796), (48, 437097), (72, 291398), (144, 145699), (367, 57168), (397, 52848), (734, 28584), (794, 26424), (1101, 19056), (1191, 17616), (1468, 14292), (1588, 13212), (2202, 9528), (2382, 8808), (2936, 7146), (3176, 6606), (3303, 6352), (3573, 5872), (4404, 4764)]