19400912

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{163}}^1\times {\mathrm{173}}^1$

素因数の和:387

約数の個数: 40

約数和(自身を含む): 38923104

約数和(自身を除く): 19522192

約数列:

[1, 2, 4, 8, 16, 43, 86, 163, 172, 173, 326, 344, 346, 652, 688, 692, 1304, 1384, 2608, 2768, 7009, 7439, 14018, 14878, 28036, 28199, 29756, 56072, 56398, 59512, 112144, 112796, 119024, 225592, 451184, 1212557, 2425114, 4850228, 9700456, 19400912]

約数ペア:

[(1, 19400912), (2, 9700456), (4, 4850228), (8, 2425114), (16, 1212557), (43, 451184), (86, 225592), (163, 119024), (172, 112796), (173, 112144), (326, 59512), (344, 56398), (346, 56072), (652, 29756), (688, 28199), (692, 28036), (1304, 14878), (1384, 14018), (2608, 7439), (2768, 7009)]