18642591

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1$

素因数の和:117

約数の個数: 72

約数和(自身を含む): 33611760

約数和(自身を除く): 14969169

約数列:

[1, 3, 9, 11, 17, 19, 33, 51, 53, 57, 99, 121, 153, 159, 171, 187, 209, 323, 363, 477, 561, 583, 627, 901, 969, 1007, 1089, 1683, 1749, 1881, 2057, 2299, 2703, 2907, 3021, 3553, 5247, 6171, 6413, 6897, 8109, 9063, 9911, 10659, 11077, 17119, 18513, 19239, 20691, 29733, 31977, 33231, 39083, 51357, 57717, 89199, 99693, 109021, 117249, 121847, 154071, 188309, 327063, 351747, 365541, 564927, 981189, 1096623, 1694781, 2071399, 6214197, 18642591]

約数ペア:

[(1, 18642591), (3, 6214197), (9, 2071399), (11, 1694781), (17, 1096623), (19, 981189), (33, 564927), (51, 365541), (53, 351747), (57, 327063), (99, 188309), (121, 154071), (153, 121847), (159, 117249), (171, 109021), (187, 99693), (209, 89199), (323, 57717), (363, 51357), (477, 39083), (561, 33231), (583, 31977), (627, 29733), (901, 20691), (969, 19239), (1007, 18513), (1089, 17119), (1683, 11077), (1749, 10659), (1881, 9911), (2057, 9063), (2299, 8109), (2703, 6897), (2907, 6413), (3021, 6171), (3553, 5247)]