19915648

素因数分解:

$2^7\times {\mathrm{19}}^2\times {\mathrm{431}}^1$

素因数の和:483

約数の個数: 48

約数和(自身を含む): 41970960

約数和(自身を除く): 22055312

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 304, 361, 431, 608, 722, 862, 1216, 1444, 1724, 2432, 2888, 3448, 5776, 6896, 8189, 11552, 13792, 16378, 23104, 27584, 32756, 46208, 55168, 65512, 131024, 155591, 262048, 311182, 524096, 622364, 1048192, 1244728, 2489456, 4978912, 9957824, 19915648]

約数ペア:

[(1, 19915648), (2, 9957824), (4, 4978912), (8, 2489456), (16, 1244728), (19, 1048192), (32, 622364), (38, 524096), (64, 311182), (76, 262048), (128, 155591), (152, 131024), (304, 65512), (361, 55168), (431, 46208), (608, 32756), (722, 27584), (862, 23104), (1216, 16378), (1444, 13792), (1724, 11552), (2432, 8189), (2888, 6896), (3448, 5776)]