80012740

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^2\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:205

約数の個数: 72

約数和(自身を含む): 179105472

約数和(自身を除く): 99092732

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 67, 71, 116, 134, 142, 145, 268, 284, 290, 335, 355, 580, 670, 710, 841, 1340, 1420, 1682, 1943, 2059, 3364, 3886, 4118, 4205, 4757, 7772, 8236, 8410, 9514, 9715, 10295, 16820, 19028, 19430, 20590, 23785, 38860, 41180, 47570, 56347, 59711, 95140, 112694, 119422, 137953, 225388, 238844, 275906, 281735, 298555, 551812, 563470, 597110, 689765, 1126940, 1194220, 1379530, 2759060, 4000637, 8001274, 16002548, 20003185, 40006370, 80012740]

約数ペア:

[(1, 80012740), (2, 40006370), (4, 20003185), (5, 16002548), (10, 8001274), (20, 4000637), (29, 2759060), (58, 1379530), (67, 1194220), (71, 1126940), (116, 689765), (134, 597110), (142, 563470), (145, 551812), (268, 298555), (284, 281735), (290, 275906), (335, 238844), (355, 225388), (580, 137953), (670, 119422), (710, 112694), (841, 95140), (1340, 59711), (1420, 56347), (1682, 47570), (1943, 41180), (2059, 38860), (3364, 23785), (3886, 20590), (4118, 19430), (4205, 19028), (4757, 16820), (7772, 10295), (8236, 9715), (8410, 9514)]