399721812

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{21929}}^1$

素因数の和:21981

約数の個数: 72

約数和(自身を含む): 1120008960

約数和(自身を除く): 720287148

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 31, 42, 49, 62, 84, 93, 98, 124, 147, 186, 196, 217, 294, 372, 434, 588, 651, 868, 1302, 1519, 2604, 3038, 4557, 6076, 9114, 18228, 21929, 43858, 65787, 87716, 131574, 153503, 263148, 307006, 460509, 614012, 679799, 921018, 1074521, 1359598, 1842036, 2039397, 2149042, 2719196, 3223563, 4078794, 4298084, 4758593, 6447126, 8157588, 9517186, 12894252, 14275779, 19034372, 28551558, 33310151, 57103116, 66620302, 99930453, 133240604, 199860906, 399721812]

約数ペア:

[(1, 399721812), (2, 199860906), (3, 133240604), (4, 99930453), (6, 66620302), (7, 57103116), (12, 33310151), (14, 28551558), (21, 19034372), (28, 14275779), (31, 12894252), (42, 9517186), (49, 8157588), (62, 6447126), (84, 4758593), (93, 4298084), (98, 4078794), (124, 3223563), (147, 2719196), (186, 2149042), (196, 2039397), (217, 1842036), (294, 1359598), (372, 1074521), (434, 921018), (588, 679799), (651, 614012), (868, 460509), (1302, 307006), (1519, 263148), (2604, 153503), (3038, 131574), (4557, 87716), (6076, 65787), (9114, 43858), (18228, 21929)]