18969488

素因数分解:

$2^4\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:339

約数の個数: 40

約数和(自身を含む): 37851000

約数和(自身を除く): 18881512

約数列:

[1, 2, 4, 8, 16, 73, 109, 146, 149, 218, 292, 298, 436, 584, 596, 872, 1168, 1192, 1744, 2384, 7957, 10877, 15914, 16241, 21754, 31828, 32482, 43508, 63656, 64964, 87016, 127312, 129928, 174032, 259856, 1185593, 2371186, 4742372, 9484744, 18969488]

約数ペア:

[(1, 18969488), (2, 9484744), (4, 4742372), (8, 2371186), (16, 1185593), (73, 259856), (109, 174032), (146, 129928), (149, 127312), (218, 87016), (292, 64964), (298, 63656), (436, 43508), (584, 32482), (596, 31828), (872, 21754), (1168, 16241), (1192, 15914), (1744, 10877), (2384, 7957)]