20961330

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{757}}^1$

素因数の和:851

約数の個数: 64

約数和(自身を含む): 55012608

約数和(自身を除く): 34051278

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 71, 78, 130, 142, 195, 213, 355, 390, 426, 710, 757, 923, 1065, 1514, 1846, 2130, 2271, 2769, 3785, 4542, 4615, 5538, 7570, 9230, 9841, 11355, 13845, 19682, 22710, 27690, 29523, 49205, 53747, 59046, 98410, 107494, 147615, 161241, 268735, 295230, 322482, 537470, 698711, 806205, 1397422, 1612410, 2096133, 3493555, 4192266, 6987110, 10480665, 20961330]

約数ペア:

[(1, 20961330), (2, 10480665), (3, 6987110), (5, 4192266), (6, 3493555), (10, 2096133), (13, 1612410), (15, 1397422), (26, 806205), (30, 698711), (39, 537470), (65, 322482), (71, 295230), (78, 268735), (130, 161241), (142, 147615), (195, 107494), (213, 98410), (355, 59046), (390, 53747), (426, 49205), (710, 29523), (757, 27690), (923, 22710), (1065, 19682), (1514, 13845), (1846, 11355), (2130, 9841), (2271, 9230), (2769, 7570), (3785, 5538), (4542, 4615)]