20210640905

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{140123}}^1$

素因数の和:140465

約数の個数: 32

約数和(自身を含む): 29943938304

約数和(自身を除く): 9733297399

約数列:

[1, 5, 7, 13, 35, 65, 91, 317, 455, 1585, 2219, 4121, 11095, 20605, 28847, 140123, 144235, 700615, 980861, 1821599, 4904305, 9107995, 12751193, 44418991, 63755965, 222094955, 310932937, 577446883, 1554664685, 2887234415, 4042128181, 20210640905]

約数ペア:

[(1, 20210640905), (5, 4042128181), (7, 2887234415), (13, 1554664685), (35, 577446883), (65, 310932937), (91, 222094955), (317, 63755965), (455, 44418991), (1585, 12751193), (2219, 9107995), (4121, 4904305), (11095, 1821599), (20605, 980861), (28847, 700615), (140123, 144235)]