18785548064

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{47}}^2\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:391

約数の個数: 144

約数和(自身を含む): 40541497920

約数和(自身を除く): 21755949856

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 47, 71, 76, 94, 142, 152, 188, 197, 284, 304, 376, 394, 568, 608, 752, 788, 893, 1136, 1349, 1504, 1576, 1786, 2209, 2272, 2698, 3152, 3337, 3572, 3743, 4418, 5396, 6304, 6674, 7144, 7486, 8836, 9259, 10792, 13348, 13987, 14288, 14972, 17672, 18518, 21584, 26696, 27974, 28576, 29944, 35344, 37036, 41971, 43168, 53392, 55948, 59888, 63403, 70688, 74072, 83942, 106784, 111896, 119776, 126806, 148144, 156839, 167884, 175921, 223792, 253612, 265753, 296288, 313678, 335768, 351842, 435173, 447584, 507224, 531506, 627356, 657389, 671536, 703684, 870346, 1014448, 1063012, 1254712, 1314778, 1343072, 1407368, 1740692, 2028896, 2126024, 2509424, 2629556, 2814736, 2979941, 3481384, 4252048, 5018848, 5259112, 5629472, 5959882, 6962768, 8268287, 8504096, 10518224, 11919764, 12490391, 13925536, 16536574, 21036448, 23839528, 24980782, 30897283, 33073148, 47679056, 49961564, 61794566, 66146296, 95358112, 99923128, 123589132, 132292592, 199846256, 247178264, 264585184, 399692512, 494356528, 587048377, 988713056, 1174096754, 2348193508, 4696387016, 9392774032, 18785548064]

約数ペア:

[(1, 18785548064), (2, 9392774032), (4, 4696387016), (8, 2348193508), (16, 1174096754), (19, 988713056), (32, 587048377), (38, 494356528), (47, 399692512), (71, 264585184), (76, 247178264), (94, 199846256), (142, 132292592), (152, 123589132), (188, 99923128), (197, 95358112), (284, 66146296), (304, 61794566), (376, 49961564), (394, 47679056), (568, 33073148), (608, 30897283), (752, 24980782), (788, 23839528), (893, 21036448), (1136, 16536574), (1349, 13925536), (1504, 12490391), (1576, 11919764), (1786, 10518224), (2209, 8504096), (2272, 8268287), (2698, 6962768), (3152, 5959882), (3337, 5629472), (3572, 5259112), (3743, 5018848), (4418, 4252048), (5396, 3481384), (6304, 2979941), (6674, 2814736), (7144, 2629556), (7486, 2509424), (8836, 2126024), (9259, 2028896), (10792, 1740692), (13348, 1407368), (13987, 1343072), (14288, 1314778), (14972, 1254712), (17672, 1063012), (18518, 1014448), (21584, 870346), (26696, 703684), (27974, 671536), (28576, 657389), (29944, 627356), (35344, 531506), (37036, 507224), (41971, 447584), (43168, 435173), (53392, 351842), (55948, 335768), (59888, 313678), (63403, 296288), (70688, 265753), (74072, 253612), (83942, 223792), (106784, 175921), (111896, 167884), (119776, 156839), (126806, 148144)]