21549735

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{443}}^1$

素因数の和:524

約数の個数: 48

約数和(自身を含む): 39896064

約数和(自身を除く): 18346329

約数列:

[1, 3, 5, 9, 15, 23, 45, 47, 69, 115, 141, 207, 235, 345, 423, 443, 705, 1035, 1081, 1329, 2115, 2215, 3243, 3987, 5405, 6645, 9729, 10189, 16215, 19935, 20821, 30567, 48645, 50945, 62463, 91701, 104105, 152835, 187389, 312315, 458505, 478883, 936945, 1436649, 2394415, 4309947, 7183245, 21549735]

約数ペア:

[(1, 21549735), (3, 7183245), (5, 4309947), (9, 2394415), (15, 1436649), (23, 936945), (45, 478883), (47, 458505), (69, 312315), (115, 187389), (141, 152835), (207, 104105), (235, 91701), (345, 62463), (423, 50945), (443, 48645), (705, 30567), (1035, 20821), (1081, 19935), (1329, 16215), (2115, 10189), (2215, 9729), (3243, 6645), (3987, 5405)]