18000980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{373}}^1$

素因数の和:528

約数の個数: 48

約数和(自身を含む): 40212480

約数和(自身を除く): 22211500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 127, 190, 254, 373, 380, 508, 635, 746, 1270, 1492, 1865, 2413, 2540, 3730, 4826, 7087, 7460, 9652, 12065, 14174, 24130, 28348, 35435, 47371, 48260, 70870, 94742, 141740, 189484, 236855, 473710, 900049, 947420, 1800098, 3600196, 4500245, 9000490, 18000980]

約数ペア:

[(1, 18000980), (2, 9000490), (4, 4500245), (5, 3600196), (10, 1800098), (19, 947420), (20, 900049), (38, 473710), (76, 236855), (95, 189484), (127, 141740), (190, 94742), (254, 70870), (373, 48260), (380, 47371), (508, 35435), (635, 28348), (746, 24130), (1270, 14174), (1492, 12065), (1865, 9652), (2413, 7460), (2540, 7087), (3730, 4826)]