21166250

素因数分解:

$2^1\times 5^4\times 7^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1$

素因数の和:129

約数の個数: 80

約数和(自身を含む): 47234880

約数和(自身を除く): 26068630

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 41, 50, 59, 70, 82, 118, 125, 175, 205, 250, 287, 295, 350, 410, 413, 574, 590, 625, 826, 875, 1025, 1250, 1435, 1475, 1750, 2050, 2065, 2419, 2870, 2950, 4130, 4375, 4838, 5125, 7175, 7375, 8750, 10250, 10325, 12095, 14350, 14750, 16933, 20650, 24190, 25625, 33866, 35875, 36875, 51250, 51625, 60475, 71750, 73750, 84665, 103250, 120950, 169330, 179375, 258125, 302375, 358750, 423325, 516250, 604750, 846650, 1511875, 2116625, 3023750, 4233250, 10583125, 21166250]

約数ペア:

[(1, 21166250), (2, 10583125), (5, 4233250), (7, 3023750), (10, 2116625), (14, 1511875), (25, 846650), (35, 604750), (41, 516250), (50, 423325), (59, 358750), (70, 302375), (82, 258125), (118, 179375), (125, 169330), (175, 120950), (205, 103250), (250, 84665), (287, 73750), (295, 71750), (350, 60475), (410, 51625), (413, 51250), (574, 36875), (590, 35875), (625, 33866), (826, 25625), (875, 24190), (1025, 20650), (1250, 16933), (1435, 14750), (1475, 14350), (1750, 12095), (2050, 10325), (2065, 10250), (2419, 8750), (2870, 7375), (2950, 7175), (4130, 5125), (4375, 4838)]