20819872

素因数分解:

$2^5\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{127}}^1$

素因数の和:293

約数の個数: 48

約数和(自身を含む): 42577920

約数和(自身を除く): 21758048

約数列:

[1, 2, 4, 8, 16, 32, 47, 94, 109, 127, 188, 218, 254, 376, 436, 508, 752, 872, 1016, 1504, 1744, 2032, 3488, 4064, 5123, 5969, 10246, 11938, 13843, 20492, 23876, 27686, 40984, 47752, 55372, 81968, 95504, 110744, 163936, 191008, 221488, 442976, 650621, 1301242, 2602484, 5204968, 10409936, 20819872]

約数ペア:

[(1, 20819872), (2, 10409936), (4, 5204968), (8, 2602484), (16, 1301242), (32, 650621), (47, 442976), (94, 221488), (109, 191008), (127, 163936), (188, 110744), (218, 95504), (254, 81968), (376, 55372), (436, 47752), (508, 40984), (752, 27686), (872, 23876), (1016, 20492), (1504, 13843), (1744, 11938), (2032, 10246), (3488, 5969), (4064, 5123)]