18290540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{379}}^1$

素因数の和:534

約数の個数: 48

約数和(自身を含む): 40857600

約数和(自身を除く): 22567060

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 127, 190, 254, 379, 380, 508, 635, 758, 1270, 1516, 1895, 2413, 2540, 3790, 4826, 7201, 7580, 9652, 12065, 14402, 24130, 28804, 36005, 48133, 48260, 72010, 96266, 144020, 192532, 240665, 481330, 914527, 962660, 1829054, 3658108, 4572635, 9145270, 18290540]

約数ペア:

[(1, 18290540), (2, 9145270), (4, 4572635), (5, 3658108), (10, 1829054), (19, 962660), (20, 914527), (38, 481330), (76, 240665), (95, 192532), (127, 144020), (190, 96266), (254, 72010), (379, 48260), (380, 48133), (508, 36005), (635, 28804), (758, 24130), (1270, 14402), (1516, 12065), (1895, 9652), (2413, 7580), (2540, 7201), (3790, 4826)]