81263420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{563}}^1\times {\mathrm{1031}}^1$

素因数の和:1610

約数の個数: 48

約数和(自身を含む): 195568128

約数和(自身を除く): 114304708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 563, 1031, 1126, 2062, 2252, 2815, 3941, 4124, 5155, 5630, 7217, 7882, 10310, 11260, 14434, 15764, 19705, 20620, 28868, 36085, 39410, 72170, 78820, 144340, 580453, 1160906, 2321812, 2902265, 4063171, 5804530, 8126342, 11609060, 16252684, 20315855, 40631710, 81263420]

約数ペア:

[(1, 81263420), (2, 40631710), (4, 20315855), (5, 16252684), (7, 11609060), (10, 8126342), (14, 5804530), (20, 4063171), (28, 2902265), (35, 2321812), (70, 1160906), (140, 580453), (563, 144340), (1031, 78820), (1126, 72170), (2062, 39410), (2252, 36085), (2815, 28868), (3941, 20620), (4124, 19705), (5155, 15764), (5630, 14434), (7217, 11260), (7882, 10310)]