128242940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{39827}}^1$

素因数の和:39866

約数の個数: 48

約数和(自身を含む): 321172992

約数和(自身を除く): 192930052

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 39827, 79654, 159308, 199135, 278789, 398270, 557578, 796540, 916021, 1115156, 1393945, 1832042, 2787890, 3664084, 4580105, 5575780, 6412147, 9160210, 12824294, 18320420, 25648588, 32060735, 64121470, 128242940]

約数ペア:

[(1, 128242940), (2, 64121470), (4, 32060735), (5, 25648588), (7, 18320420), (10, 12824294), (14, 9160210), (20, 6412147), (23, 5575780), (28, 4580105), (35, 3664084), (46, 2787890), (70, 1832042), (92, 1393945), (115, 1115156), (140, 916021), (161, 796540), (230, 557578), (322, 398270), (460, 278789), (644, 199135), (805, 159308), (1610, 79654), (3220, 39827)]