40687640

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{20759}}^1$

素因数の和:20784

約数の個数: 48

約数和(自身を含む): 106498800

約数和(自身を除く): 65811160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 20759, 41518, 83036, 103795, 145313, 166072, 207590, 290626, 415180, 581252, 726565, 830360, 1017191, 1162504, 1453130, 2034382, 2906260, 4068764, 5085955, 5812520, 8137528, 10171910, 20343820, 40687640]

約数ペア:

[(1, 40687640), (2, 20343820), (4, 10171910), (5, 8137528), (7, 5812520), (8, 5085955), (10, 4068764), (14, 2906260), (20, 2034382), (28, 1453130), (35, 1162504), (40, 1017191), (49, 830360), (56, 726565), (70, 581252), (98, 415180), (140, 290626), (196, 207590), (245, 166072), (280, 145313), (392, 103795), (490, 83036), (980, 41518), (1960, 20759)]