81498700

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{179}}^1$

素因数の和:379

約数の個数: 72

約数和(自身を含む): 185144400

約数和(自身を除く): 103645700

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 116, 145, 157, 179, 290, 314, 358, 580, 628, 716, 725, 785, 895, 1450, 1570, 1790, 2900, 3140, 3580, 3925, 4475, 4553, 5191, 7850, 8950, 9106, 10382, 15700, 17900, 18212, 20764, 22765, 25955, 28103, 45530, 51910, 56206, 91060, 103820, 112412, 113825, 129775, 140515, 227650, 259550, 281030, 455300, 519100, 562060, 702575, 814987, 1405150, 1629974, 2810300, 3259948, 4074935, 8149870, 16299740, 20374675, 40749350, 81498700]

約数ペア:

[(1, 81498700), (2, 40749350), (4, 20374675), (5, 16299740), (10, 8149870), (20, 4074935), (25, 3259948), (29, 2810300), (50, 1629974), (58, 1405150), (100, 814987), (116, 702575), (145, 562060), (157, 519100), (179, 455300), (290, 281030), (314, 259550), (358, 227650), (580, 140515), (628, 129775), (716, 113825), (725, 112412), (785, 103820), (895, 91060), (1450, 56206), (1570, 51910), (1790, 45530), (2900, 28103), (3140, 25955), (3580, 22765), (3925, 20764), (4475, 18212), (4553, 17900), (5191, 15700), (7850, 10382), (8950, 9106)]