21000492006

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{151}}^1\times {\mathrm{509}}^1$

素因数の和:822

約数の個数: 128

約数和(自身を含む): 47509217280

約数和(自身を除く): 26508725274

約数列:

[1, 2, 3, 6, 13, 26, 31, 39, 62, 78, 93, 113, 151, 186, 226, 302, 339, 403, 453, 509, 678, 806, 906, 1018, 1209, 1469, 1527, 1963, 2418, 2938, 3054, 3503, 3926, 4407, 4681, 5889, 6617, 7006, 8814, 9362, 10509, 11778, 13234, 14043, 15779, 17063, 19851, 21018, 28086, 31558, 34126, 39702, 45539, 47337, 51189, 57517, 60853, 76859, 91078, 94674, 102378, 115034, 121706, 136617, 153718, 172551, 182559, 205127, 221819, 230577, 273234, 345102, 365118, 410254, 443638, 461154, 528953, 615381, 665457, 747721, 999167, 1057906, 1230762, 1330914, 1495442, 1586859, 1783027, 1998334, 2243163, 2382629, 2997501, 3173718, 3566054, 4486326, 4765258, 5349081, 5995002, 6876389, 7147887, 8685067, 10698162, 13752778, 14295774, 17370134, 20629167, 23179351, 26055201, 30974177, 41258334, 46358702, 52110402, 61948354, 69538053, 92922531, 112905871, 139076106, 185845062, 225811742, 269237077, 338717613, 538474154, 677435226, 807711231, 1615422462, 3500082001, 7000164002, 10500246003, 21000492006]

約数ペア:

[(1, 21000492006), (2, 10500246003), (3, 7000164002), (6, 3500082001), (13, 1615422462), (26, 807711231), (31, 677435226), (39, 538474154), (62, 338717613), (78, 269237077), (93, 225811742), (113, 185845062), (151, 139076106), (186, 112905871), (226, 92922531), (302, 69538053), (339, 61948354), (403, 52110402), (453, 46358702), (509, 41258334), (678, 30974177), (806, 26055201), (906, 23179351), (1018, 20629167), (1209, 17370134), (1469, 14295774), (1527, 13752778), (1963, 10698162), (2418, 8685067), (2938, 7147887), (3054, 6876389), (3503, 5995002), (3926, 5349081), (4407, 4765258), (4681, 4486326), (5889, 3566054), (6617, 3173718), (7006, 2997501), (8814, 2382629), (9362, 2243163), (10509, 1998334), (11778, 1783027), (13234, 1586859), (14043, 1495442), (15779, 1330914), (17063, 1230762), (19851, 1057906), (21018, 999167), (28086, 747721), (31558, 665457), (34126, 615381), (39702, 528953), (45539, 461154), (47337, 443638), (51189, 410254), (57517, 365118), (60853, 345102), (76859, 273234), (91078, 230577), (94674, 221819), (102378, 205127), (115034, 182559), (121706, 172551), (136617, 153718)]