15990640

素因数分解:

$2^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1459}}^1$

素因数の和:1609

約数の個数: 40

約数和(自身を含む): 37475280

約数和(自身を除く): 21484640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 137, 274, 548, 685, 1096, 1370, 1459, 2192, 2740, 2918, 5480, 5836, 7295, 10960, 11672, 14590, 23344, 29180, 58360, 116720, 199883, 399766, 799532, 999415, 1599064, 1998830, 3198128, 3997660, 7995320, 15990640]

約数ペア:

[(1, 15990640), (2, 7995320), (4, 3997660), (5, 3198128), (8, 1998830), (10, 1599064), (16, 999415), (20, 799532), (40, 399766), (80, 199883), (137, 116720), (274, 58360), (548, 29180), (685, 23344), (1096, 14590), (1370, 11672), (1459, 10960), (2192, 7295), (2740, 5836), (2918, 5480)]