21084490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{191}}^1$

素因数の和:307

約数の個数: 64

約数和(自身を含む): 46448640

約数和(自身を除く): 25364150

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 83, 95, 133, 166, 190, 191, 266, 382, 415, 581, 665, 830, 955, 1162, 1330, 1337, 1577, 1910, 2674, 2905, 3154, 3629, 5810, 6685, 7258, 7885, 11039, 13370, 15770, 15853, 18145, 22078, 25403, 31706, 36290, 50806, 55195, 79265, 110390, 110971, 127015, 158530, 221942, 254030, 301207, 554855, 602414, 1109710, 1506035, 2108449, 3012070, 4216898, 10542245, 21084490]

約数ペア:

[(1, 21084490), (2, 10542245), (5, 4216898), (7, 3012070), (10, 2108449), (14, 1506035), (19, 1109710), (35, 602414), (38, 554855), (70, 301207), (83, 254030), (95, 221942), (133, 158530), (166, 127015), (190, 110971), (191, 110390), (266, 79265), (382, 55195), (415, 50806), (581, 36290), (665, 31706), (830, 25403), (955, 22078), (1162, 18145), (1330, 15853), (1337, 15770), (1577, 13370), (1910, 11039), (2674, 7885), (2905, 7258), (3154, 6685), (3629, 5810)]