20456450

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{211}}^1\times {\mathrm{277}}^1$

素因数の和:507

約数の個数: 48

約数和(自身を含む): 43848384

約数和(自身を除く): 23391934

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 175, 211, 277, 350, 422, 554, 1055, 1385, 1477, 1939, 2110, 2770, 2954, 3878, 5275, 6925, 7385, 9695, 10550, 13850, 14770, 19390, 36925, 48475, 58447, 73850, 96950, 116894, 292235, 409129, 584470, 818258, 1461175, 2045645, 2922350, 4091290, 10228225, 20456450]

約数ペア:

[(1, 20456450), (2, 10228225), (5, 4091290), (7, 2922350), (10, 2045645), (14, 1461175), (25, 818258), (35, 584470), (50, 409129), (70, 292235), (175, 116894), (211, 96950), (277, 73850), (350, 58447), (422, 48475), (554, 36925), (1055, 19390), (1385, 14770), (1477, 13850), (1939, 10550), (2110, 9695), (2770, 7385), (2954, 6925), (3878, 5275)]