28910720

素因数分解:

$2^7\times 5^1\times {\mathrm{199}}^1\times {\mathrm{227}}^1$

素因数の和:445

約数の個数: 64

約数和(自身を含む): 69768000

約数和(自身を除く): 40857280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 199, 227, 320, 398, 454, 640, 796, 908, 995, 1135, 1592, 1816, 1990, 2270, 3184, 3632, 3980, 4540, 6368, 7264, 7960, 9080, 12736, 14528, 15920, 18160, 25472, 29056, 31840, 36320, 45173, 63680, 72640, 90346, 127360, 145280, 180692, 225865, 361384, 451730, 722768, 903460, 1445536, 1806920, 2891072, 3613840, 5782144, 7227680, 14455360, 28910720]

約数ペア:

[(1, 28910720), (2, 14455360), (4, 7227680), (5, 5782144), (8, 3613840), (10, 2891072), (16, 1806920), (20, 1445536), (32, 903460), (40, 722768), (64, 451730), (80, 361384), (128, 225865), (160, 180692), (199, 145280), (227, 127360), (320, 90346), (398, 72640), (454, 63680), (640, 45173), (796, 36320), (908, 31840), (995, 29056), (1135, 25472), (1592, 18160), (1816, 15920), (1990, 14528), (2270, 12736), (3184, 9080), (3632, 7960), (3980, 7264), (4540, 6368)]