405654820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{3559}}^1$

素因数の和:3748

約数の個数: 48

約数和(自身を含む): 879177600

約数和(自身を除く): 473522780

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 139, 164, 205, 278, 410, 556, 695, 820, 1390, 2780, 3559, 5699, 7118, 11398, 14236, 17795, 22796, 28495, 35590, 56990, 71180, 113980, 145919, 291838, 494701, 583676, 729595, 989402, 1459190, 1978804, 2473505, 2918380, 4947010, 9894020, 20282741, 40565482, 81130964, 101413705, 202827410, 405654820]

約数ペア:

[(1, 405654820), (2, 202827410), (4, 101413705), (5, 81130964), (10, 40565482), (20, 20282741), (41, 9894020), (82, 4947010), (139, 2918380), (164, 2473505), (205, 1978804), (278, 1459190), (410, 989402), (556, 729595), (695, 583676), (820, 494701), (1390, 291838), (2780, 145919), (3559, 113980), (5699, 71180), (7118, 56990), (11398, 35590), (14236, 28495), (17795, 22796)]