281570235

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{25679}}^1$

素因数の和:25747

約数の個数: 32

約数和(自身を含む): 488125440

約数和(自身を除く): 206555205

約数列:

[1, 3, 5, 15, 17, 43, 51, 85, 129, 215, 255, 645, 731, 2193, 3655, 10965, 25679, 77037, 128395, 385185, 436543, 1104197, 1309629, 2182715, 3312591, 5520985, 6548145, 16562955, 18771349, 56314047, 93856745, 281570235]

約数ペア:

[(1, 281570235), (3, 93856745), (5, 56314047), (15, 18771349), (17, 16562955), (43, 6548145), (51, 5520985), (85, 3312591), (129, 2182715), (215, 1309629), (255, 1104197), (645, 436543), (731, 385185), (2193, 128395), (3655, 77037), (10965, 25679)]