19725291236

素因数分解:

$2^2\times 7^2\times {\mathrm{137}}^1\times {\mathrm{353}}^1\times {\mathrm{2081}}^1$

素因数の和:2589

約数の個数: 72

約数和(自身を含む): 40582235736

約数和(自身を除く): 20856944500

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 137, 196, 274, 353, 548, 706, 959, 1412, 1918, 2081, 2471, 3836, 4162, 4942, 6713, 8324, 9884, 13426, 14567, 17297, 26852, 29134, 34594, 48361, 58268, 69188, 96722, 101969, 193444, 203938, 285097, 338527, 407876, 570194, 677054, 734593, 1140388, 1354108, 1469186, 1995679, 2369689, 2938372, 3991358, 4739378, 5142151, 7982716, 9478756, 10284302, 13969753, 20568604, 27939506, 35995057, 55879012, 71990114, 100639241, 143980228, 201278482, 402556964, 704474687, 1408949374, 2817898748, 4931322809, 9862645618, 19725291236]

約数ペア:

[(1, 19725291236), (2, 9862645618), (4, 4931322809), (7, 2817898748), (14, 1408949374), (28, 704474687), (49, 402556964), (98, 201278482), (137, 143980228), (196, 100639241), (274, 71990114), (353, 55879012), (548, 35995057), (706, 27939506), (959, 20568604), (1412, 13969753), (1918, 10284302), (2081, 9478756), (2471, 7982716), (3836, 5142151), (4162, 4739378), (4942, 3991358), (6713, 2938372), (8324, 2369689), (9884, 1995679), (13426, 1469186), (14567, 1354108), (17297, 1140388), (26852, 734593), (29134, 677054), (34594, 570194), (48361, 407876), (58268, 338527), (69188, 285097), (96722, 203938), (101969, 193444)]