21197155

素因数分解:

$5^1\times 7^2\times {\mathrm{241}}^1\times {\mathrm{359}}^1$

素因数の和:619

約数の個数: 24

約数和(自身を含む): 29795040

約数和(自身を除く): 8597885

約数列:

[1, 5, 7, 35, 49, 241, 245, 359, 1205, 1687, 1795, 2513, 8435, 11809, 12565, 17591, 59045, 86519, 87955, 432595, 605633, 3028165, 4239431, 21197155]

約数ペア:

[(1, 21197155), (5, 4239431), (7, 3028165), (35, 605633), (49, 432595), (241, 87955), (245, 86519), (359, 59045), (1205, 17591), (1687, 12565), (1795, 11809), (2513, 8435)]