138049720

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{17519}}^1$

素因数の和:17727

約数の個数: 32

約数和(自身を含む): 312206400

約数和(自身を除く): 174156680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 17519, 35038, 70076, 87595, 140152, 175190, 350380, 700760, 3451243, 6902486, 13804972, 17256215, 27609944, 34512430, 69024860, 138049720]

約数ペア:

[(1, 138049720), (2, 69024860), (4, 34512430), (5, 27609944), (8, 17256215), (10, 13804972), (20, 6902486), (40, 3451243), (197, 700760), (394, 350380), (788, 175190), (985, 140152), (1576, 87595), (1970, 70076), (3940, 35038), (7880, 17519)]