19712711680

素因数分解:

$2^{10}\times 5^1\times {\mathrm{1091}}^1\times {\mathrm{3529}}^1$

素因数の和:4645

約数の個数: 88

約数和(自身を含む): 47344162320

約数和(自身を除く): 27631450640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1091, 1280, 2182, 2560, 3529, 4364, 5120, 5455, 7058, 8728, 10910, 14116, 17456, 17645, 21820, 28232, 34912, 35290, 43640, 56464, 69824, 70580, 87280, 112928, 139648, 141160, 174560, 225856, 279296, 282320, 349120, 451712, 558592, 564640, 698240, 903424, 1117184, 1129280, 1396480, 1806848, 2258560, 2792960, 3613696, 3850139, 4517120, 5585920, 7700278, 9034240, 15400556, 18068480, 19250695, 30801112, 38501390, 61602224, 77002780, 123204448, 154005560, 246408896, 308011120, 492817792, 616022240, 985635584, 1232044480, 1971271168, 2464088960, 3942542336, 4928177920, 9856355840, 19712711680]

約数ペア:

[(1, 19712711680), (2, 9856355840), (4, 4928177920), (5, 3942542336), (8, 2464088960), (10, 1971271168), (16, 1232044480), (20, 985635584), (32, 616022240), (40, 492817792), (64, 308011120), (80, 246408896), (128, 154005560), (160, 123204448), (256, 77002780), (320, 61602224), (512, 38501390), (640, 30801112), (1024, 19250695), (1091, 18068480), (1280, 15400556), (2182, 9034240), (2560, 7700278), (3529, 5585920), (4364, 4517120), (5120, 3850139), (5455, 3613696), (7058, 2792960), (8728, 2258560), (10910, 1806848), (14116, 1396480), (17456, 1129280), (17645, 1117184), (21820, 903424), (28232, 698240), (34912, 564640), (35290, 558592), (43640, 451712), (56464, 349120), (69824, 282320), (70580, 279296), (87280, 225856), (112928, 174560), (139648, 141160)]