28621688

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{659}}^1$

素因数の和:815

約数の個数: 32

約数和(自身を含む): 55242000

約数和(自身を除く): 26620312

約数列:

[1, 2, 4, 8, 61, 89, 122, 178, 244, 356, 488, 659, 712, 1318, 2636, 5272, 5429, 10858, 21716, 40199, 43432, 58651, 80398, 117302, 160796, 234604, 321592, 469208, 3577711, 7155422, 14310844, 28621688]

約数ペア:

[(1, 28621688), (2, 14310844), (4, 7155422), (8, 3577711), (61, 469208), (89, 321592), (122, 234604), (178, 160796), (244, 117302), (356, 80398), (488, 58651), (659, 43432), (712, 40199), (1318, 21716), (2636, 10858), (5272, 5429)]