20054985

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:158

約数の個数: 64

約数和(自身を含む): 36495360

約数和(自身を除く): 16440375

約数列:

[1, 3, 5, 15, 17, 31, 43, 51, 59, 85, 93, 129, 155, 177, 215, 255, 295, 465, 527, 645, 731, 885, 1003, 1333, 1581, 1829, 2193, 2537, 2635, 3009, 3655, 3999, 5015, 5487, 6665, 7611, 7905, 9145, 10965, 12685, 15045, 19995, 22661, 27435, 31093, 38055, 43129, 67983, 78647, 93279, 113305, 129387, 155465, 215645, 235941, 339915, 393235, 466395, 646935, 1179705, 1336999, 4010997, 6684995, 20054985]

約数ペア:

[(1, 20054985), (3, 6684995), (5, 4010997), (15, 1336999), (17, 1179705), (31, 646935), (43, 466395), (51, 393235), (59, 339915), (85, 235941), (93, 215645), (129, 155465), (155, 129387), (177, 113305), (215, 93279), (255, 78647), (295, 67983), (465, 43129), (527, 38055), (645, 31093), (731, 27435), (885, 22661), (1003, 19995), (1333, 15045), (1581, 12685), (1829, 10965), (2193, 9145), (2537, 7905), (2635, 7611), (3009, 6665), (3655, 5487), (3999, 5015)]