19972400

素因数分解:

$2^4\times 5^2\times 7^2\times {\mathrm{1019}}^1$

素因数の和:1051

約数の個数: 90

約数和(自身を含む): 55872540

約数和(自身を除く): 35900140

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, 1019, 1225, 1400, 1960, 2038, 2450, 2800, 3920, 4076, 4900, 5095, 7133, 8152, 9800, 10190, 14266, 16304, 19600, 20380, 25475, 28532, 35665, 40760, 49931, 50950, 57064, 71330, 81520, 99862, 101900, 114128, 142660, 178325, 199724, 203800, 249655, 285320, 356650, 399448, 407600, 499310, 570640, 713300, 798896, 998620, 1248275, 1426600, 1997240, 2496550, 2853200, 3994480, 4993100, 9986200, 19972400]

約数ペア:

[(1, 19972400), (2, 9986200), (4, 4993100), (5, 3994480), (7, 2853200), (8, 2496550), (10, 1997240), (14, 1426600), (16, 1248275), (20, 998620), (25, 798896), (28, 713300), (35, 570640), (40, 499310), (49, 407600), (50, 399448), (56, 356650), (70, 285320), (80, 249655), (98, 203800), (100, 199724), (112, 178325), (140, 142660), (175, 114128), (196, 101900), (200, 99862), (245, 81520), (280, 71330), (350, 57064), (392, 50950), (400, 49931), (490, 40760), (560, 35665), (700, 28532), (784, 25475), (980, 20380), (1019, 19600), (1225, 16304), (1400, 14266), (1960, 10190), (2038, 9800), (2450, 8152), (2800, 7133), (3920, 5095), (4076, 4900)]