40290440

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{5113}}^1$

素因数の和:5321

約数の個数: 32

約数和(自身を含む): 91131480

約数和(自身を除く): 50841040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 5113, 7880, 10226, 20452, 25565, 40904, 51130, 102260, 204520, 1007261, 2014522, 4029044, 5036305, 8058088, 10072610, 20145220, 40290440]

約数ペア:

[(1, 40290440), (2, 20145220), (4, 10072610), (5, 8058088), (8, 5036305), (10, 4029044), (20, 2014522), (40, 1007261), (197, 204520), (394, 102260), (788, 51130), (985, 40904), (1576, 25565), (1970, 20452), (3940, 10226), (5113, 7880)]