68780090

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{709}}^1$

素因数の和:914

約数の個数: 32

約数和(自身を含む): 126522000

約数和(自身を除く): 57741910

約数列:

[1, 2, 5, 10, 89, 109, 178, 218, 445, 545, 709, 890, 1090, 1418, 3545, 7090, 9701, 19402, 48505, 63101, 77281, 97010, 126202, 154562, 315505, 386405, 631010, 772810, 6878009, 13756018, 34390045, 68780090]

約数ペア:

[(1, 68780090), (2, 34390045), (5, 13756018), (10, 6878009), (89, 772810), (109, 631010), (178, 386405), (218, 315505), (445, 154562), (545, 126202), (709, 97010), (890, 77281), (1090, 63101), (1418, 48505), (3545, 19402), (7090, 9701)]