455920

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:193

約数の個数: 40

約数和(自身を含む): 1093680

約数和(自身を除く): 637760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 139, 164, 205, 278, 328, 410, 556, 656, 695, 820, 1112, 1390, 1640, 2224, 2780, 3280, 5560, 5699, 11120, 11398, 22796, 28495, 45592, 56990, 91184, 113980, 227960, 455920]

約数ペア:

[(1, 455920), (2, 227960), (4, 113980), (5, 91184), (8, 56990), (10, 45592), (16, 28495), (20, 22796), (40, 11398), (41, 11120), (80, 5699), (82, 5560), (139, 3280), (164, 2780), (205, 2224), (278, 1640), (328, 1390), (410, 1112), (556, 820), (656, 695)]