25198731

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 41184000

約数和(自身を除く): 15985269

約数列:

[1, 3, 9, 19, 23, 43, 57, 69, 129, 149, 171, 207, 387, 437, 447, 817, 989, 1311, 1341, 2451, 2831, 2967, 3427, 3933, 6407, 7353, 8493, 8901, 10281, 18791, 19221, 25479, 30843, 56373, 57663, 65113, 121733, 147361, 169119, 195339, 365199, 442083, 586017, 1095597, 1326249, 2799859, 8399577, 25198731]

約数ペア:

[(1, 25198731), (3, 8399577), (9, 2799859), (19, 1326249), (23, 1095597), (43, 586017), (57, 442083), (69, 365199), (129, 195339), (149, 169119), (171, 147361), (207, 121733), (387, 65113), (437, 57663), (447, 56373), (817, 30843), (989, 25479), (1311, 19221), (1341, 18791), (2451, 10281), (2831, 8901), (2967, 8493), (3427, 7353), (3933, 6407)]