28278523

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{229}}^1$

素因数の和:331

約数の個数: 32

約数和(自身を含む): 37094400

約数和(自身を除く): 8815877

約数列:

[1, 7, 13, 23, 59, 91, 161, 229, 299, 413, 767, 1357, 1603, 2093, 2977, 5267, 5369, 9499, 13511, 17641, 20839, 36869, 68471, 94577, 123487, 175643, 310753, 479297, 1229501, 2175271, 4039789, 28278523]

約数ペア:

[(1, 28278523), (7, 4039789), (13, 2175271), (23, 1229501), (59, 479297), (91, 310753), (161, 175643), (229, 123487), (299, 94577), (413, 68471), (767, 36869), (1357, 20839), (1603, 17641), (2093, 13511), (2977, 9499), (5267, 5369)]