18475888

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{311}}^1$

素因数の和:445

約数の個数: 40

約数和(自身を含む): 37140480

約数和(自身を除く): 18664592

約数列:

[1, 2, 4, 8, 16, 47, 79, 94, 158, 188, 311, 316, 376, 622, 632, 752, 1244, 1264, 2488, 3713, 4976, 7426, 14617, 14852, 24569, 29234, 29704, 49138, 58468, 59408, 98276, 116936, 196552, 233872, 393104, 1154743, 2309486, 4618972, 9237944, 18475888]

約数ペア:

[(1, 18475888), (2, 9237944), (4, 4618972), (8, 2309486), (16, 1154743), (47, 393104), (79, 233872), (94, 196552), (158, 116936), (188, 98276), (311, 59408), (316, 58468), (376, 49138), (622, 29704), (632, 29234), (752, 24569), (1244, 14852), (1264, 14617), (2488, 7426), (3713, 4976)]