81435753

素因数分解:

$3^3\times 7^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1$

素因数の和:251

約数の個数: 64

約数和(自身を含む): 143616000

約数和(自身を除く): 62180247

約数列:

[1, 3, 7, 9, 21, 27, 59, 63, 67, 109, 177, 189, 201, 327, 413, 469, 531, 603, 763, 981, 1239, 1407, 1593, 1809, 2289, 2943, 3717, 3953, 4221, 6431, 6867, 7303, 11151, 11859, 12663, 19293, 20601, 21909, 27671, 35577, 45017, 51121, 57879, 65727, 83013, 106731, 135051, 153363, 173637, 197181, 249039, 405153, 430877, 460089, 747117, 1215459, 1292631, 1380267, 3016139, 3877893, 9048417, 11633679, 27145251, 81435753]

約数ペア:

[(1, 81435753), (3, 27145251), (7, 11633679), (9, 9048417), (21, 3877893), (27, 3016139), (59, 1380267), (63, 1292631), (67, 1215459), (109, 747117), (177, 460089), (189, 430877), (201, 405153), (327, 249039), (413, 197181), (469, 173637), (531, 153363), (603, 135051), (763, 106731), (981, 83013), (1239, 65727), (1407, 57879), (1593, 51121), (1809, 45017), (2289, 35577), (2943, 27671), (3717, 21909), (3953, 20601), (4221, 19293), (6431, 12663), (6867, 11859), (7303, 11151)]