18639304

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{823}}^1$

素因数の和:997

約数の個数: 32

約数和(自身を含む): 37080000

約数和(自身を除く): 18440696

約数列:

[1, 2, 4, 8, 19, 38, 76, 149, 152, 298, 596, 823, 1192, 1646, 2831, 3292, 5662, 6584, 11324, 15637, 22648, 31274, 62548, 122627, 125096, 245254, 490508, 981016, 2329913, 4659826, 9319652, 18639304]

約数ペア:

[(1, 18639304), (2, 9319652), (4, 4659826), (8, 2329913), (19, 981016), (38, 490508), (76, 245254), (149, 125096), (152, 122627), (298, 62548), (596, 31274), (823, 22648), (1192, 15637), (1646, 11324), (2831, 6584), (3292, 5662)]