20927500

素因数分解:

$2^2\times 5^4\times {\mathrm{11}}^1\times {\mathrm{761}}^1$

素因数の和:796

約数の個数: 60

約数和(自身を含む): 49990248

約数和(自身を除く): 29062748

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 125, 220, 250, 275, 500, 550, 625, 761, 1100, 1250, 1375, 1522, 2500, 2750, 3044, 3805, 5500, 6875, 7610, 8371, 13750, 15220, 16742, 19025, 27500, 33484, 38050, 41855, 76100, 83710, 95125, 167420, 190250, 209275, 380500, 418550, 475625, 837100, 951250, 1046375, 1902500, 2092750, 4185500, 5231875, 10463750, 20927500]

約数ペア:

[(1, 20927500), (2, 10463750), (4, 5231875), (5, 4185500), (10, 2092750), (11, 1902500), (20, 1046375), (22, 951250), (25, 837100), (44, 475625), (50, 418550), (55, 380500), (100, 209275), (110, 190250), (125, 167420), (220, 95125), (250, 83710), (275, 76100), (500, 41855), (550, 38050), (625, 33484), (761, 27500), (1100, 19025), (1250, 16742), (1375, 15220), (1522, 13750), (2500, 8371), (2750, 7610), (3044, 6875), (3805, 5500)]