18984775

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{241}}^1$

素因数の和:411

約数の個数: 24

約数和(自身を含む): 24846624

約数和(自身を除く): 5861849

約数列:

[1, 5, 23, 25, 115, 137, 241, 575, 685, 1205, 3151, 3425, 5543, 6025, 15755, 27715, 33017, 78775, 138575, 165085, 759391, 825425, 3796955, 18984775]

約数ペア:

[(1, 18984775), (5, 3796955), (23, 825425), (25, 759391), (115, 165085), (137, 138575), (241, 78775), (575, 33017), (685, 27715), (1205, 15755), (3151, 6025), (3425, 5543)]