21025065

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{881}}^1$

素因数の和:969

約数の個数: 32

約数和(自身を含む): 35392896

約数和(自身を除く): 14367831

約数列:

[1, 3, 5, 15, 37, 43, 111, 129, 185, 215, 555, 645, 881, 1591, 2643, 4405, 4773, 7955, 13215, 23865, 32597, 37883, 97791, 113649, 162985, 189415, 488955, 568245, 1401671, 4205013, 7008355, 21025065]

約数ペア:

[(1, 21025065), (3, 7008355), (5, 4205013), (15, 1401671), (37, 568245), (43, 488955), (111, 189415), (129, 162985), (185, 113649), (215, 97791), (555, 37883), (645, 32597), (881, 23865), (1591, 13215), (2643, 7955), (4405, 4773)]