20625928

素因数分解:

$2^3\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{491}}^1$

素因数の和:645

約数の個数: 32

約数和(自身を含む): 39852000

約数和(自身を除く): 19226072

約数列:

[1, 2, 4, 8, 59, 89, 118, 178, 236, 356, 472, 491, 712, 982, 1964, 3928, 5251, 10502, 21004, 28969, 42008, 43699, 57938, 87398, 115876, 174796, 231752, 349592, 2578241, 5156482, 10312964, 20625928]

約数ペア:

[(1, 20625928), (2, 10312964), (4, 5156482), (8, 2578241), (59, 349592), (89, 231752), (118, 174796), (178, 115876), (236, 87398), (356, 57938), (472, 43699), (491, 42008), (712, 28969), (982, 21004), (1964, 10502), (3928, 5251)]