20478240

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{14221}}^1$

素因数の和:14242

約数の個数: 72

約数和(自身を含む): 69886908

約数和(自身を除く): 49408668

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, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 14221, 28442, 42663, 56884, 71105, 85326, 113768, 127989, 142210, 170652, 213315, 227536, 255978, 284420, 341304, 426630, 455072, 511956, 568840, 639945, 682608, 853260, 1023912, 1137680, 1279890, 1365216, 1706520, 2047824, 2275360, 2559780, 3413040, 4095648, 5119560, 6826080, 10239120, 20478240]

約数ペア:

[(1, 20478240), (2, 10239120), (3, 6826080), (4, 5119560), (5, 4095648), (6, 3413040), (8, 2559780), (9, 2275360), (10, 2047824), (12, 1706520), (15, 1365216), (16, 1279890), (18, 1137680), (20, 1023912), (24, 853260), (30, 682608), (32, 639945), (36, 568840), (40, 511956), (45, 455072), (48, 426630), (60, 341304), (72, 284420), (80, 255978), (90, 227536), (96, 213315), (120, 170652), (144, 142210), (160, 127989), (180, 113768), (240, 85326), (288, 71105), (360, 56884), (480, 42663), (720, 28442), (1440, 14221)]