21285690

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{5179}}^1$

素因数の和:5326

約数の個数: 32

約数和(自身を含む): 51468480

約数和(自身を除く): 30182790

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 137, 274, 411, 685, 822, 1370, 2055, 4110, 5179, 10358, 15537, 25895, 31074, 51790, 77685, 155370, 709523, 1419046, 2128569, 3547615, 4257138, 7095230, 10642845, 21285690]

約数ペア:

[(1, 21285690), (2, 10642845), (3, 7095230), (5, 4257138), (6, 3547615), (10, 2128569), (15, 1419046), (30, 709523), (137, 155370), (274, 77685), (411, 51790), (685, 31074), (822, 25895), (1370, 15537), (2055, 10358), (4110, 5179)]