208549965

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{1187}}^1$

素因数の和:1278

約数の個数: 64

約数和(自身を含む): 387991296

約数和(自身を除く): 179441331

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 53, 65, 85, 159, 195, 221, 255, 265, 663, 689, 795, 901, 1105, 1187, 2067, 2703, 3315, 3445, 3561, 4505, 5935, 10335, 11713, 13515, 15431, 17805, 20179, 35139, 46293, 58565, 60537, 62911, 77155, 100895, 175695, 188733, 231465, 262327, 302685, 314555, 786981, 817843, 943665, 1069487, 1311635, 2453529, 3208461, 3934905, 4089215, 5347435, 12267645, 13903331, 16042305, 41709993, 69516655, 208549965]

約数ペア:

[(1, 208549965), (3, 69516655), (5, 41709993), (13, 16042305), (15, 13903331), (17, 12267645), (39, 5347435), (51, 4089215), (53, 3934905), (65, 3208461), (85, 2453529), (159, 1311635), (195, 1069487), (221, 943665), (255, 817843), (265, 786981), (663, 314555), (689, 302685), (795, 262327), (901, 231465), (1105, 188733), (1187, 175695), (2067, 100895), (2703, 77155), (3315, 62911), (3445, 60537), (3561, 58565), (4505, 46293), (5935, 35139), (10335, 20179), (11713, 17805), (13515, 15431)]