320571520

素因数分解:

$2^7\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1949}}^1$

素因数の和:2225

約数の個数: 64

約数和(自身を含む): 769743000

約数和(自身を除く): 449171480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 257, 320, 514, 640, 1028, 1285, 1949, 2056, 2570, 3898, 4112, 5140, 7796, 8224, 9745, 10280, 15592, 16448, 19490, 20560, 31184, 32896, 38980, 41120, 62368, 77960, 82240, 124736, 155920, 164480, 249472, 311840, 500893, 623680, 1001786, 1247360, 2003572, 2504465, 4007144, 5008930, 8014288, 10017860, 16028576, 20035720, 32057152, 40071440, 64114304, 80142880, 160285760, 320571520]

約数ペア:

[(1, 320571520), (2, 160285760), (4, 80142880), (5, 64114304), (8, 40071440), (10, 32057152), (16, 20035720), (20, 16028576), (32, 10017860), (40, 8014288), (64, 5008930), (80, 4007144), (128, 2504465), (160, 2003572), (257, 1247360), (320, 1001786), (514, 623680), (640, 500893), (1028, 311840), (1285, 249472), (1949, 164480), (2056, 155920), (2570, 124736), (3898, 82240), (4112, 77960), (5140, 62368), (7796, 41120), (8224, 38980), (9745, 32896), (10280, 31184), (15592, 20560), (16448, 19490)]