20902299

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:140

約数の個数: 64

約数和(自身を含む): 35458560

約数和(自身を除く): 14556261

約数列:

[1, 3, 11, 17, 19, 33, 37, 51, 53, 57, 111, 159, 187, 209, 323, 407, 561, 583, 627, 629, 703, 901, 969, 1007, 1221, 1749, 1887, 1961, 2109, 2703, 3021, 3553, 5883, 6919, 7733, 9911, 10659, 11077, 11951, 17119, 20757, 21571, 23199, 29733, 33231, 33337, 35853, 37259, 51357, 64713, 100011, 111777, 131461, 188309, 366707, 394383, 409849, 564927, 633403, 1100121, 1229547, 1900209, 6967433, 20902299]

約数ペア:

[(1, 20902299), (3, 6967433), (11, 1900209), (17, 1229547), (19, 1100121), (33, 633403), (37, 564927), (51, 409849), (53, 394383), (57, 366707), (111, 188309), (159, 131461), (187, 111777), (209, 100011), (323, 64713), (407, 51357), (561, 37259), (583, 35853), (627, 33337), (629, 33231), (703, 29733), (901, 23199), (969, 21571), (1007, 20757), (1221, 17119), (1749, 11951), (1887, 11077), (1961, 10659), (2109, 9911), (2703, 7733), (3021, 6919), (3553, 5883)]