79217920

素因数分解:

$2^8\times 5^1\times {\mathrm{199}}^1\times {\mathrm{311}}^1$

素因数の和:531

約数の個数: 72

約数和(自身を含む): 191318400

約数和(自身を除く): 112100480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 199, 256, 311, 320, 398, 622, 640, 796, 995, 1244, 1280, 1555, 1592, 1990, 2488, 3110, 3184, 3980, 4976, 6220, 6368, 7960, 9952, 12440, 12736, 15920, 19904, 24880, 25472, 31840, 39808, 49760, 50944, 61889, 63680, 79616, 99520, 123778, 127360, 199040, 247556, 254720, 309445, 398080, 495112, 618890, 990224, 1237780, 1980448, 2475560, 3960896, 4951120, 7921792, 9902240, 15843584, 19804480, 39608960, 79217920]

約数ペア:

[(1, 79217920), (2, 39608960), (4, 19804480), (5, 15843584), (8, 9902240), (10, 7921792), (16, 4951120), (20, 3960896), (32, 2475560), (40, 1980448), (64, 1237780), (80, 990224), (128, 618890), (160, 495112), (199, 398080), (256, 309445), (311, 254720), (320, 247556), (398, 199040), (622, 127360), (640, 123778), (796, 99520), (995, 79616), (1244, 63680), (1280, 61889), (1555, 50944), (1592, 49760), (1990, 39808), (2488, 31840), (3110, 25472), (3184, 24880), (3980, 19904), (4976, 15920), (6220, 12736), (6368, 12440), (7960, 9952)]