90154820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{20773}}^1$

素因数の和:20820

約数の個数: 48

約数和(自身を含む): 223362048

約数和(自身を除く): 133207228

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 20773, 41546, 83092, 103865, 145411, 207730, 290822, 415460, 581644, 643963, 727055, 1287926, 1454110, 2575852, 2908220, 3219815, 4507741, 6439630, 9015482, 12879260, 18030964, 22538705, 45077410, 90154820]

約数ペア:

[(1, 90154820), (2, 45077410), (4, 22538705), (5, 18030964), (7, 12879260), (10, 9015482), (14, 6439630), (20, 4507741), (28, 3219815), (31, 2908220), (35, 2575852), (62, 1454110), (70, 1287926), (124, 727055), (140, 643963), (155, 581644), (217, 415460), (310, 290822), (434, 207730), (620, 145411), (868, 103865), (1085, 83092), (2170, 41546), (4340, 20773)]