18474976

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{499}}^1$

素因数の和:611

約数の個数: 48

約数和(自身を含む): 39690000

約数和(自身を除く): 21215024

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 89, 104, 178, 208, 356, 416, 499, 712, 998, 1157, 1424, 1996, 2314, 2848, 3992, 4628, 6487, 7984, 9256, 12974, 15968, 18512, 25948, 37024, 44411, 51896, 88822, 103792, 177644, 207584, 355288, 577343, 710576, 1154686, 1421152, 2309372, 4618744, 9237488, 18474976]

約数ペア:

[(1, 18474976), (2, 9237488), (4, 4618744), (8, 2309372), (13, 1421152), (16, 1154686), (26, 710576), (32, 577343), (52, 355288), (89, 207584), (104, 177644), (178, 103792), (208, 88822), (356, 51896), (416, 44411), (499, 37024), (712, 25948), (998, 18512), (1157, 15968), (1424, 12974), (1996, 9256), (2314, 7984), (2848, 6487), (3992, 4628)]