19718368

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{541}}^1$

素因数の和:635

約数の個数: 48

約数和(自身を含む): 41794704

約数和(自身を除く): 22076336

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 67, 68, 134, 136, 268, 272, 536, 541, 544, 1072, 1082, 1139, 2144, 2164, 2278, 4328, 4556, 8656, 9112, 9197, 17312, 18224, 18394, 36247, 36448, 36788, 72494, 73576, 144988, 147152, 289976, 294304, 579952, 616199, 1159904, 1232398, 2464796, 4929592, 9859184, 19718368]

約数ペア:

[(1, 19718368), (2, 9859184), (4, 4929592), (8, 2464796), (16, 1232398), (17, 1159904), (32, 616199), (34, 579952), (67, 294304), (68, 289976), (134, 147152), (136, 144988), (268, 73576), (272, 72494), (536, 36788), (541, 36448), (544, 36247), (1072, 18394), (1082, 18224), (1139, 17312), (2144, 9197), (2164, 9112), (2278, 8656), (4328, 4556)]