19518940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1303}}^1$

素因数の和:1426

約数の個数: 48

約数和(自身を含む): 47319552

約数和(自身を除く): 27800612

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 107, 140, 214, 428, 535, 749, 1070, 1303, 1498, 2140, 2606, 2996, 3745, 5212, 6515, 7490, 9121, 13030, 14980, 18242, 26060, 36484, 45605, 91210, 139421, 182420, 278842, 557684, 697105, 975947, 1394210, 1951894, 2788420, 3903788, 4879735, 9759470, 19518940]

約数ペア:

[(1, 19518940), (2, 9759470), (4, 4879735), (5, 3903788), (7, 2788420), (10, 1951894), (14, 1394210), (20, 975947), (28, 697105), (35, 557684), (70, 278842), (107, 182420), (140, 139421), (214, 91210), (428, 45605), (535, 36484), (749, 26060), (1070, 18242), (1303, 14980), (1498, 13030), (2140, 9121), (2606, 7490), (2996, 6515), (3745, 5212)]