21456567

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:125

約数の個数: 72

約数和(自身を含む): 38591280

約数和(自身を除く): 17134713

約数列:

[1, 3, 9, 11, 17, 19, 33, 51, 57, 61, 99, 121, 153, 171, 183, 187, 209, 323, 363, 549, 561, 627, 671, 969, 1037, 1089, 1159, 1683, 1881, 2013, 2057, 2299, 2907, 3111, 3477, 3553, 6039, 6171, 6897, 7381, 9333, 10431, 10659, 11407, 12749, 18513, 19703, 20691, 22143, 31977, 34221, 38247, 39083, 59109, 66429, 102663, 114741, 117249, 125477, 140239, 177327, 216733, 351747, 376431, 420717, 650199, 1129293, 1262151, 1950597, 2384063, 7152189, 21456567]

約数ペア:

[(1, 21456567), (3, 7152189), (9, 2384063), (11, 1950597), (17, 1262151), (19, 1129293), (33, 650199), (51, 420717), (57, 376431), (61, 351747), (99, 216733), (121, 177327), (153, 140239), (171, 125477), (183, 117249), (187, 114741), (209, 102663), (323, 66429), (363, 59109), (549, 39083), (561, 38247), (627, 34221), (671, 31977), (969, 22143), (1037, 20691), (1089, 19703), (1159, 18513), (1683, 12749), (1881, 11407), (2013, 10659), (2057, 10431), (2299, 9333), (2907, 7381), (3111, 6897), (3477, 6171), (3553, 6039)]