988900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:85

約数の個数: 72

約数和(自身を含む): 2499840

約数和(自身を除く): 1510940

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 29, 31, 44, 50, 55, 58, 62, 100, 110, 116, 124, 145, 155, 220, 275, 290, 310, 319, 341, 550, 580, 620, 638, 682, 725, 775, 899, 1100, 1276, 1364, 1450, 1550, 1595, 1705, 1798, 2900, 3100, 3190, 3410, 3596, 4495, 6380, 6820, 7975, 8525, 8990, 9889, 15950, 17050, 17980, 19778, 22475, 31900, 34100, 39556, 44950, 49445, 89900, 98890, 197780, 247225, 494450, 988900]

約数ペア:

[(1, 988900), (2, 494450), (4, 247225), (5, 197780), (10, 98890), (11, 89900), (20, 49445), (22, 44950), (25, 39556), (29, 34100), (31, 31900), (44, 22475), (50, 19778), (55, 17980), (58, 17050), (62, 15950), (100, 9889), (110, 8990), (116, 8525), (124, 7975), (145, 6820), (155, 6380), (220, 4495), (275, 3596), (290, 3410), (310, 3190), (319, 3100), (341, 2900), (550, 1798), (580, 1705), (620, 1595), (638, 1550), (682, 1450), (725, 1364), (775, 1276), (899, 1100)]