18328996

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{263}}^1$

素因数の和:424

約数の個数: 48

約数和(自身を含む): 39029760

約数和(自身を除く): 20700764

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 131, 133, 262, 263, 266, 524, 526, 532, 917, 1052, 1834, 1841, 2489, 3668, 3682, 4978, 4997, 7364, 9956, 9994, 17423, 19988, 34453, 34846, 34979, 68906, 69692, 69958, 137812, 139916, 241171, 482342, 654607, 964684, 1309214, 2618428, 4582249, 9164498, 18328996]

約数ペア:

[(1, 18328996), (2, 9164498), (4, 4582249), (7, 2618428), (14, 1309214), (19, 964684), (28, 654607), (38, 482342), (76, 241171), (131, 139916), (133, 137812), (262, 69958), (263, 69692), (266, 68906), (524, 34979), (526, 34846), (532, 34453), (917, 19988), (1052, 17423), (1834, 9994), (1841, 9956), (2489, 7364), (3668, 4997), (3682, 4978)]