2801920

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1$

素因数の和:231

約数の個数: 72

約数和(自身を含む): 7358400

約数和(自身を除く): 4556480

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 199, 220, 256, 320, 352, 398, 440, 640, 704, 796, 880, 995, 1280, 1408, 1592, 1760, 1990, 2189, 2816, 3184, 3520, 3980, 4378, 6368, 7040, 7960, 8756, 10945, 12736, 14080, 15920, 17512, 21890, 25472, 31840, 35024, 43780, 50944, 63680, 70048, 87560, 127360, 140096, 175120, 254720, 280192, 350240, 560384, 700480, 1400960, 2801920]

約数ペア:

[(1, 2801920), (2, 1400960), (4, 700480), (5, 560384), (8, 350240), (10, 280192), (11, 254720), (16, 175120), (20, 140096), (22, 127360), (32, 87560), (40, 70048), (44, 63680), (55, 50944), (64, 43780), (80, 35024), (88, 31840), (110, 25472), (128, 21890), (160, 17512), (176, 15920), (199, 14080), (220, 12736), (256, 10945), (320, 8756), (352, 7960), (398, 7040), (440, 6368), (640, 4378), (704, 3980), (796, 3520), (880, 3184), (995, 2816), (1280, 2189), (1408, 1990), (1592, 1760)]