20520900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{151}}^2$

素因数の和:322

約数の個数: 81

約数和(自身を含む): 64750413

約数和(自身を除く): 44229513

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 150, 151, 180, 225, 300, 302, 450, 453, 604, 755, 900, 906, 1359, 1510, 1812, 2265, 2718, 3020, 3775, 4530, 5436, 6795, 7550, 9060, 11325, 13590, 15100, 22650, 22801, 27180, 33975, 45300, 45602, 67950, 68403, 91204, 114005, 135900, 136806, 205209, 228010, 273612, 342015, 410418, 456020, 570025, 684030, 820836, 1026045, 1140050, 1368060, 1710075, 2052090, 2280100, 3420150, 4104180, 5130225, 6840300, 10260450, 20520900]

約数ペア:

[(1, 20520900), (2, 10260450), (3, 6840300), (4, 5130225), (5, 4104180), (6, 3420150), (9, 2280100), (10, 2052090), (12, 1710075), (15, 1368060), (18, 1140050), (20, 1026045), (25, 820836), (30, 684030), (36, 570025), (45, 456020), (50, 410418), (60, 342015), (75, 273612), (90, 228010), (100, 205209), (150, 136806), (151, 135900), (180, 114005), (225, 91204), (300, 68403), (302, 67950), (450, 45602), (453, 45300), (604, 33975), (755, 27180), (900, 22801), (906, 22650), (1359, 15100), (1510, 13590), (1812, 11325), (2265, 9060), (2718, 7550), (3020, 6795), (3775, 5436)]