40545820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{2657}}^1$

素因数の和:2782

約数の個数: 48

約数和(自身を含む): 98239680

約数和(自身を除く): 57693860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 109, 140, 218, 436, 545, 763, 1090, 1526, 2180, 2657, 3052, 3815, 5314, 7630, 10628, 13285, 15260, 18599, 26570, 37198, 53140, 74396, 92995, 185990, 289613, 371980, 579226, 1158452, 1448065, 2027291, 2896130, 4054582, 5792260, 8109164, 10136455, 20272910, 40545820]

約数ペア:

[(1, 40545820), (2, 20272910), (4, 10136455), (5, 8109164), (7, 5792260), (10, 4054582), (14, 2896130), (20, 2027291), (28, 1448065), (35, 1158452), (70, 579226), (109, 371980), (140, 289613), (218, 185990), (436, 92995), (545, 74396), (763, 53140), (1090, 37198), (1526, 26570), (2180, 18599), (2657, 15260), (3052, 13285), (3815, 10628), (5314, 7630)]