18152500

素因数分解:

$2^2\times 5^4\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:214

約数の個数: 60

約数和(自身を含む): 40740084

約数和(自身を除く): 22587584

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 53, 100, 106, 125, 137, 212, 250, 265, 274, 500, 530, 548, 625, 685, 1060, 1250, 1325, 1370, 2500, 2650, 2740, 3425, 5300, 6625, 6850, 7261, 13250, 13700, 14522, 17125, 26500, 29044, 33125, 34250, 36305, 66250, 68500, 72610, 85625, 132500, 145220, 171250, 181525, 342500, 363050, 726100, 907625, 1815250, 3630500, 4538125, 9076250, 18152500]

約数ペア:

[(1, 18152500), (2, 9076250), (4, 4538125), (5, 3630500), (10, 1815250), (20, 907625), (25, 726100), (50, 363050), (53, 342500), (100, 181525), (106, 171250), (125, 145220), (137, 132500), (212, 85625), (250, 72610), (265, 68500), (274, 66250), (500, 36305), (530, 34250), (548, 33125), (625, 29044), (685, 26500), (1060, 17125), (1250, 14522), (1325, 13700), (1370, 13250), (2500, 7261), (2650, 6850), (2740, 6625), (3425, 5300)]