138830210

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{389}}^1\times {\mathrm{401}}^1$

素因数の和:886

約数の個数: 32

約数和(自身を含む): 253983600

約数和(自身を除く): 115153390

約数列:

[1, 2, 5, 10, 89, 178, 389, 401, 445, 778, 802, 890, 1945, 2005, 3890, 4010, 34621, 35689, 69242, 71378, 155989, 173105, 178445, 311978, 346210, 356890, 779945, 1559890, 13883021, 27766042, 69415105, 138830210]

約数ペア:

[(1, 138830210), (2, 69415105), (5, 27766042), (10, 13883021), (89, 1559890), (178, 779945), (389, 356890), (401, 346210), (445, 311978), (778, 178445), (802, 173105), (890, 155989), (1945, 71378), (2005, 69242), (3890, 35689), (4010, 34621)]