400525220

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{20249}}^1$

素因数の和:20324

約数の個数: 48

約数和(自身を含む): 898128000

約数和(自身を除く): 497602780

約数列:

[1, 2, 4, 5, 10, 20, 23, 43, 46, 86, 92, 115, 172, 215, 230, 430, 460, 860, 989, 1978, 3956, 4945, 9890, 19780, 20249, 40498, 80996, 101245, 202490, 404980, 465727, 870707, 931454, 1741414, 1862908, 2328635, 3482828, 4353535, 4657270, 8707070, 9314540, 17414140, 20026261, 40052522, 80105044, 100131305, 200262610, 400525220]

約数ペア:

[(1, 400525220), (2, 200262610), (4, 100131305), (5, 80105044), (10, 40052522), (20, 20026261), (23, 17414140), (43, 9314540), (46, 8707070), (86, 4657270), (92, 4353535), (115, 3482828), (172, 2328635), (215, 1862908), (230, 1741414), (430, 931454), (460, 870707), (860, 465727), (989, 404980), (1978, 202490), (3956, 101245), (4945, 80996), (9890, 40498), (19780, 20249)]