397968340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{258421}}^1$

素因数の和:258448

約数の個数: 48

約数和(自身を含む): 1041957504

約数和(自身を除く): 643989164

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 258421, 516842, 1033684, 1292105, 1808947, 2584210, 2842631, 3617894, 5168420, 5685262, 7235788, 9044735, 11370524, 14213155, 18089470, 19898417, 28426310, 36178940, 39796834, 56852620, 79593668, 99492085, 198984170, 397968340]

約数ペア:

[(1, 397968340), (2, 198984170), (4, 99492085), (5, 79593668), (7, 56852620), (10, 39796834), (11, 36178940), (14, 28426310), (20, 19898417), (22, 18089470), (28, 14213155), (35, 11370524), (44, 9044735), (55, 7235788), (70, 5685262), (77, 5168420), (110, 3617894), (140, 2842631), (154, 2584210), (220, 1808947), (308, 1292105), (385, 1033684), (770, 516842), (1540, 258421)]