21600440

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{13171}}^1$

素因数の和:13223

約数の個数: 32

約数和(自身を含む): 49790160

約数和(自身を除く): 28189720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 13171, 26342, 52684, 65855, 105368, 131710, 263420, 526840, 540011, 1080022, 2160044, 2700055, 4320088, 5400110, 10800220, 21600440]

約数ペア:

[(1, 21600440), (2, 10800220), (4, 5400110), (5, 4320088), (8, 2700055), (10, 2160044), (20, 1080022), (40, 540011), (41, 526840), (82, 263420), (164, 131710), (205, 105368), (328, 65855), (410, 52684), (820, 26342), (1640, 13171)]