1804220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{139}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 4233600

約数和(自身を除く): 2429380

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 59, 110, 118, 139, 220, 236, 278, 295, 556, 590, 649, 695, 1180, 1298, 1390, 1529, 2596, 2780, 3058, 3245, 6116, 6490, 7645, 8201, 12980, 15290, 16402, 30580, 32804, 41005, 82010, 90211, 164020, 180422, 360844, 451055, 902110, 1804220]

約数ペア:

[(1, 1804220), (2, 902110), (4, 451055), (5, 360844), (10, 180422), (11, 164020), (20, 90211), (22, 82010), (44, 41005), (55, 32804), (59, 30580), (110, 16402), (118, 15290), (139, 12980), (220, 8201), (236, 7645), (278, 6490), (295, 6116), (556, 3245), (590, 3058), (649, 2780), (695, 2596), (1180, 1529), (1298, 1390)]