31981280

素因数分解:

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

素因数の和:1611

約数の個数: 48

約数和(自身を含む): 76159440

約数和(自身を除く): 44178160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 137, 160, 274, 548, 685, 1096, 1370, 1459, 2192, 2740, 2918, 4384, 5480, 5836, 7295, 10960, 11672, 14590, 21920, 23344, 29180, 46688, 58360, 116720, 199883, 233440, 399766, 799532, 999415, 1599064, 1998830, 3198128, 3997660, 6396256, 7995320, 15990640, 31981280]

約数ペア:

[(1, 31981280), (2, 15990640), (4, 7995320), (5, 6396256), (8, 3997660), (10, 3198128), (16, 1998830), (20, 1599064), (32, 999415), (40, 799532), (80, 399766), (137, 233440), (160, 199883), (274, 116720), (548, 58360), (685, 46688), (1096, 29180), (1370, 23344), (1459, 21920), (2192, 14590), (2740, 11672), (2918, 10960), (4384, 7295), (5480, 5836)]