19910304

素因数分解:

$2^5\times 3^2\times {\mathrm{257}}^1\times {\mathrm{269}}^1$

素因数の和:542

約数の個数: 72

約数和(自身を含む): 57051540

約数和(自身を除く): 37141236

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 257, 269, 288, 514, 538, 771, 807, 1028, 1076, 1542, 1614, 2056, 2152, 2313, 2421, 3084, 3228, 4112, 4304, 4626, 4842, 6168, 6456, 8224, 8608, 9252, 9684, 12336, 12912, 18504, 19368, 24672, 25824, 37008, 38736, 69133, 74016, 77472, 138266, 207399, 276532, 414798, 553064, 622197, 829596, 1106128, 1244394, 1659192, 2212256, 2488788, 3318384, 4977576, 6636768, 9955152, 19910304]

約数ペア:

[(1, 19910304), (2, 9955152), (3, 6636768), (4, 4977576), (6, 3318384), (8, 2488788), (9, 2212256), (12, 1659192), (16, 1244394), (18, 1106128), (24, 829596), (32, 622197), (36, 553064), (48, 414798), (72, 276532), (96, 207399), (144, 138266), (257, 77472), (269, 74016), (288, 69133), (514, 38736), (538, 37008), (771, 25824), (807, 24672), (1028, 19368), (1076, 18504), (1542, 12912), (1614, 12336), (2056, 9684), (2152, 9252), (2313, 8608), (2421, 8224), (3084, 6456), (3228, 6168), (4112, 4842), (4304, 4626)]