15756820

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{199}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 34473600

約数和(自身を除く): 18716780

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 107, 148, 185, 199, 214, 370, 398, 428, 535, 740, 796, 995, 1070, 1990, 2140, 3959, 3980, 7363, 7918, 14726, 15836, 19795, 21293, 29452, 36815, 39590, 42586, 73630, 79180, 85172, 106465, 147260, 212930, 425860, 787841, 1575682, 3151364, 3939205, 7878410, 15756820]

約数ペア:

[(1, 15756820), (2, 7878410), (4, 3939205), (5, 3151364), (10, 1575682), (20, 787841), (37, 425860), (74, 212930), (107, 147260), (148, 106465), (185, 85172), (199, 79180), (214, 73630), (370, 42586), (398, 39590), (428, 36815), (535, 29452), (740, 21293), (796, 19795), (995, 15836), (1070, 14726), (1990, 7918), (2140, 7363), (3959, 3980)]