81124400

素因数分解:

$2^4\times 5^2\times 7^2\times {\mathrm{4139}}^1$

素因数の和:4171

約数の個数: 90

約数和(自身を含む): 226776780

約数和(自身を除く): 145652380

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 49, 50, 56, 70, 80, 98, 100, 112, 140, 175, 196, 200, 245, 280, 350, 392, 400, 490, 560, 700, 784, 980, 1225, 1400, 1960, 2450, 2800, 3920, 4139, 4900, 8278, 9800, 16556, 19600, 20695, 28973, 33112, 41390, 57946, 66224, 82780, 103475, 115892, 144865, 165560, 202811, 206950, 231784, 289730, 331120, 405622, 413900, 463568, 579460, 724325, 811244, 827800, 1014055, 1158920, 1448650, 1622488, 1655600, 2028110, 2317840, 2897300, 3244976, 4056220, 5070275, 5794600, 8112440, 10140550, 11589200, 16224880, 20281100, 40562200, 81124400]

約数ペア:

[(1, 81124400), (2, 40562200), (4, 20281100), (5, 16224880), (7, 11589200), (8, 10140550), (10, 8112440), (14, 5794600), (16, 5070275), (20, 4056220), (25, 3244976), (28, 2897300), (35, 2317840), (40, 2028110), (49, 1655600), (50, 1622488), (56, 1448650), (70, 1158920), (80, 1014055), (98, 827800), (100, 811244), (112, 724325), (140, 579460), (175, 463568), (196, 413900), (200, 405622), (245, 331120), (280, 289730), (350, 231784), (392, 206950), (400, 202811), (490, 165560), (560, 144865), (700, 115892), (784, 103475), (980, 82780), (1225, 66224), (1400, 57946), (1960, 41390), (2450, 33112), (2800, 28973), (3920, 20695), (4139, 19600), (4900, 16556), (8278, 9800)]