21645156

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{1559}}^1$

素因数の和:1668

約数の個数: 48

約数和(自身を含む): 55036800

約数和(自身を除く): 33391644

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 89, 156, 178, 267, 356, 534, 1068, 1157, 1559, 2314, 3118, 3471, 4628, 4677, 6236, 6942, 9354, 13884, 18708, 20267, 40534, 60801, 81068, 121602, 138751, 243204, 277502, 416253, 555004, 832506, 1665012, 1803763, 3607526, 5411289, 7215052, 10822578, 21645156]

約数ペア:

[(1, 21645156), (2, 10822578), (3, 7215052), (4, 5411289), (6, 3607526), (12, 1803763), (13, 1665012), (26, 832506), (39, 555004), (52, 416253), (78, 277502), (89, 243204), (156, 138751), (178, 121602), (267, 81068), (356, 60801), (534, 40534), (1068, 20267), (1157, 18708), (1559, 13884), (2314, 9354), (3118, 6942), (3471, 6236), (4628, 4677)]