51901780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{211}}^1\times {\mathrm{251}}^1$

素因数の和:485

約数の個数: 72

約数和(自身を含む): 127897056

約数和(自身を除く): 75995276

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 211, 245, 251, 422, 490, 502, 844, 980, 1004, 1055, 1255, 1477, 1757, 2110, 2510, 2954, 3514, 4220, 5020, 5908, 7028, 7385, 8785, 10339, 12299, 14770, 17570, 20678, 24598, 29540, 35140, 41356, 49196, 51695, 52961, 61495, 103390, 105922, 122990, 206780, 211844, 245980, 264805, 370727, 529610, 741454, 1059220, 1482908, 1853635, 2595089, 3707270, 5190178, 7414540, 10380356, 12975445, 25950890, 51901780]

約数ペア:

[(1, 51901780), (2, 25950890), (4, 12975445), (5, 10380356), (7, 7414540), (10, 5190178), (14, 3707270), (20, 2595089), (28, 1853635), (35, 1482908), (49, 1059220), (70, 741454), (98, 529610), (140, 370727), (196, 264805), (211, 245980), (245, 211844), (251, 206780), (422, 122990), (490, 105922), (502, 103390), (844, 61495), (980, 52961), (1004, 51695), (1055, 49196), (1255, 41356), (1477, 35140), (1757, 29540), (2110, 24598), (2510, 20678), (2954, 17570), (3514, 14770), (4220, 12299), (5020, 10339), (5908, 8785), (7028, 7385)]