138493880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{494621}}^1$

素因数の和:494639

約数の個数: 32

約数和(自身を含む): 356127840

約数和(自身を除く): 217633960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 494621, 989242, 1978484, 2473105, 3462347, 3956968, 4946210, 6924694, 9892420, 13849388, 17311735, 19784840, 27698776, 34623470, 69246940, 138493880]

約数ペア:

[(1, 138493880), (2, 69246940), (4, 34623470), (5, 27698776), (7, 19784840), (8, 17311735), (10, 13849388), (14, 9892420), (20, 6924694), (28, 4946210), (35, 3956968), (40, 3462347), (56, 2473105), (70, 1978484), (140, 989242), (280, 494621)]