20752900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1289}}^1$

素因数の和:1333

約数の個数: 72

約数和(自身を含む): 53746560

約数和(自身を除く): 32993660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 25, 28, 35, 46, 50, 70, 92, 100, 115, 140, 161, 175, 230, 322, 350, 460, 575, 644, 700, 805, 1150, 1289, 1610, 2300, 2578, 3220, 4025, 5156, 6445, 8050, 9023, 12890, 16100, 18046, 25780, 29647, 32225, 36092, 45115, 59294, 64450, 90230, 118588, 128900, 148235, 180460, 207529, 225575, 296470, 415058, 451150, 592940, 741175, 830116, 902300, 1037645, 1482350, 2075290, 2964700, 4150580, 5188225, 10376450, 20752900]

約数ペア:

[(1, 20752900), (2, 10376450), (4, 5188225), (5, 4150580), (7, 2964700), (10, 2075290), (14, 1482350), (20, 1037645), (23, 902300), (25, 830116), (28, 741175), (35, 592940), (46, 451150), (50, 415058), (70, 296470), (92, 225575), (100, 207529), (115, 180460), (140, 148235), (161, 128900), (175, 118588), (230, 90230), (322, 64450), (350, 59294), (460, 45115), (575, 36092), (644, 32225), (700, 29647), (805, 25780), (1150, 18046), (1289, 16100), (1610, 12890), (2300, 9023), (2578, 8050), (3220, 6445), (4025, 5156)]