400320

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{139}}^1$

素因数の和:162

約数の個数: 84

約数和(自身を含む): 1386840

約数和(自身を除く): 986520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 139, 144, 160, 180, 192, 240, 278, 288, 320, 360, 417, 480, 556, 576, 695, 720, 834, 960, 1112, 1251, 1390, 1440, 1668, 2085, 2224, 2502, 2780, 2880, 3336, 4170, 4448, 5004, 5560, 6255, 6672, 8340, 8896, 10008, 11120, 12510, 13344, 16680, 20016, 22240, 25020, 26688, 33360, 40032, 44480, 50040, 66720, 80064, 100080, 133440, 200160, 400320]

約数ペア:

[(1, 400320), (2, 200160), (3, 133440), (4, 100080), (5, 80064), (6, 66720), (8, 50040), (9, 44480), (10, 40032), (12, 33360), (15, 26688), (16, 25020), (18, 22240), (20, 20016), (24, 16680), (30, 13344), (32, 12510), (36, 11120), (40, 10008), (45, 8896), (48, 8340), (60, 6672), (64, 6255), (72, 5560), (80, 5004), (90, 4448), (96, 4170), (120, 3336), (139, 2880), (144, 2780), (160, 2502), (180, 2224), (192, 2085), (240, 1668), (278, 1440), (288, 1390), (320, 1251), (360, 1112), (417, 960), (480, 834), (556, 720), (576, 695)]