20441575

素因数分解:

$5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:113

約数の個数: 72

約数和(自身を含む): 33841584

約数和(自身を除く): 13400009

約数列:

[1, 5, 7, 11, 25, 35, 37, 41, 49, 55, 77, 175, 185, 205, 245, 259, 275, 287, 385, 407, 451, 539, 925, 1025, 1225, 1295, 1435, 1517, 1813, 1925, 2009, 2035, 2255, 2695, 2849, 3157, 6475, 7175, 7585, 9065, 10045, 10175, 10619, 11275, 13475, 14245, 15785, 16687, 19943, 22099, 37925, 45325, 50225, 53095, 71225, 74333, 78925, 83435, 99715, 110495, 116809, 265475, 371665, 417175, 498575, 552475, 584045, 817663, 1858325, 2920225, 4088315, 20441575]

約数ペア:

[(1, 20441575), (5, 4088315), (7, 2920225), (11, 1858325), (25, 817663), (35, 584045), (37, 552475), (41, 498575), (49, 417175), (55, 371665), (77, 265475), (175, 116809), (185, 110495), (205, 99715), (245, 83435), (259, 78925), (275, 74333), (287, 71225), (385, 53095), (407, 50225), (451, 45325), (539, 37925), (925, 22099), (1025, 19943), (1225, 16687), (1295, 15785), (1435, 14245), (1517, 13475), (1813, 11275), (1925, 10619), (2009, 10175), (2035, 10045), (2255, 9065), (2695, 7585), (2849, 7175), (3157, 6475)]