207828280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{331}}^1\times {\mathrm{1427}}^1$

素因数の和:1780

約数の個数: 64

約数和(自身を含む): 512023680

約数和(自身を除く): 304195400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 331, 440, 662, 1324, 1427, 1655, 2648, 2854, 3310, 3641, 5708, 6620, 7135, 7282, 11416, 13240, 14270, 14564, 15697, 18205, 28540, 29128, 31394, 36410, 57080, 62788, 72820, 78485, 125576, 145640, 156970, 313940, 472337, 627880, 944674, 1889348, 2361685, 3778696, 4723370, 5195707, 9446740, 10391414, 18893480, 20782828, 25978535, 41565656, 51957070, 103914140, 207828280]

約数ペア:

[(1, 207828280), (2, 103914140), (4, 51957070), (5, 41565656), (8, 25978535), (10, 20782828), (11, 18893480), (20, 10391414), (22, 9446740), (40, 5195707), (44, 4723370), (55, 3778696), (88, 2361685), (110, 1889348), (220, 944674), (331, 627880), (440, 472337), (662, 313940), (1324, 156970), (1427, 145640), (1655, 125576), (2648, 78485), (2854, 72820), (3310, 62788), (3641, 57080), (5708, 36410), (6620, 31394), (7135, 29128), (7282, 28540), (11416, 18205), (13240, 15697), (14270, 14564)]