51779720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{31573}}^1$

素因数の和:31625

約数の個数: 32

約数和(自身を含む): 119349720

約数和(自身を除く): 67570000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 31573, 63146, 126292, 157865, 252584, 315730, 631460, 1262920, 1294493, 2588986, 5177972, 6472465, 10355944, 12944930, 25889860, 51779720]

約数ペア:

[(1, 51779720), (2, 25889860), (4, 12944930), (5, 10355944), (8, 6472465), (10, 5177972), (20, 2588986), (40, 1294493), (41, 1262920), (82, 631460), (164, 315730), (205, 252584), (328, 157865), (410, 126292), (820, 63146), (1640, 31573)]