21429265

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:130

約数の個数: 64

約数和(自身を含む): 33530112

約数和(自身を除く): 12100847

約数列:

[1, 5, 11, 13, 17, 41, 43, 55, 65, 85, 143, 187, 205, 215, 221, 451, 473, 533, 559, 697, 715, 731, 935, 1105, 1763, 2255, 2365, 2431, 2665, 2795, 3485, 3655, 5863, 6149, 7667, 8041, 8815, 9061, 9503, 12155, 19393, 22919, 29315, 29971, 30745, 38335, 40205, 45305, 47515, 96965, 99671, 104533, 114595, 149855, 252109, 329681, 389623, 498355, 522665, 1260545, 1648405, 1948115, 4285853, 21429265]

約数ペア:

[(1, 21429265), (5, 4285853), (11, 1948115), (13, 1648405), (17, 1260545), (41, 522665), (43, 498355), (55, 389623), (65, 329681), (85, 252109), (143, 149855), (187, 114595), (205, 104533), (215, 99671), (221, 96965), (451, 47515), (473, 45305), (533, 40205), (559, 38335), (697, 30745), (715, 29971), (731, 29315), (935, 22919), (1105, 19393), (1763, 12155), (2255, 9503), (2365, 9061), (2431, 8815), (2665, 8041), (2795, 7667), (3485, 6149), (3655, 5863)]