128203760

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{8053}}^1$

素因数の和:8265

約数の個数: 40

約数和(自身を含む): 299608800

約数和(自身を除く): 171405040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1592, 1990, 3184, 3980, 7960, 8053, 15920, 16106, 32212, 40265, 64424, 80530, 128848, 161060, 322120, 644240, 1602547, 3205094, 6410188, 8012735, 12820376, 16025470, 25640752, 32050940, 64101880, 128203760]

約数ペア:

[(1, 128203760), (2, 64101880), (4, 32050940), (5, 25640752), (8, 16025470), (10, 12820376), (16, 8012735), (20, 6410188), (40, 3205094), (80, 1602547), (199, 644240), (398, 322120), (796, 161060), (995, 128848), (1592, 80530), (1990, 64424), (3184, 40265), (3980, 32212), (7960, 16106), (8053, 15920)]