69437500

素因数分解:

$2^2\times 5^6\times {\mathrm{11}}^1\times {\mathrm{101}}^1$

素因数の和:146

約数の個数: 84

約数和(自身を含む): 167341608

約数和(自身を除く): 97904108

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 101, 110, 125, 202, 220, 250, 275, 404, 500, 505, 550, 625, 1010, 1100, 1111, 1250, 1375, 2020, 2222, 2500, 2525, 2750, 3125, 4444, 5050, 5500, 5555, 6250, 6875, 10100, 11110, 12500, 12625, 13750, 15625, 22220, 25250, 27500, 27775, 31250, 34375, 50500, 55550, 62500, 63125, 68750, 111100, 126250, 137500, 138875, 171875, 252500, 277750, 315625, 343750, 555500, 631250, 687500, 694375, 1262500, 1388750, 1578125, 2777500, 3156250, 3471875, 6312500, 6943750, 13887500, 17359375, 34718750, 69437500]

約数ペア:

[(1, 69437500), (2, 34718750), (4, 17359375), (5, 13887500), (10, 6943750), (11, 6312500), (20, 3471875), (22, 3156250), (25, 2777500), (44, 1578125), (50, 1388750), (55, 1262500), (100, 694375), (101, 687500), (110, 631250), (125, 555500), (202, 343750), (220, 315625), (250, 277750), (275, 252500), (404, 171875), (500, 138875), (505, 137500), (550, 126250), (625, 111100), (1010, 68750), (1100, 63125), (1111, 62500), (1250, 55550), (1375, 50500), (2020, 34375), (2222, 31250), (2500, 27775), (2525, 27500), (2750, 25250), (3125, 22220), (4444, 15625), (5050, 13750), (5500, 12625), (5555, 12500), (6250, 11110), (6875, 10100)]