28221115

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{439}}^1$

素因数の和:523

約数の個数: 32

約数和(自身を含む): 39029760

約数和(自身を除く): 10808645

約数列:

[1, 5, 13, 23, 43, 65, 115, 215, 299, 439, 559, 989, 1495, 2195, 2795, 4945, 5707, 10097, 12857, 18877, 28535, 50485, 64285, 94385, 131261, 245401, 434171, 656305, 1227005, 2170855, 5644223, 28221115]

約数ペア:

[(1, 28221115), (5, 5644223), (13, 2170855), (23, 1227005), (43, 656305), (65, 434171), (115, 245401), (215, 131261), (299, 94385), (439, 64285), (559, 50485), (989, 28535), (1495, 18877), (2195, 12857), (2795, 10097), (4945, 5707)]