20181279951

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{991}}^1$

素因数の和:1186

約数の個数: 128

約数和(自身を含む): 37026201600

約数和(自身を除く): 16844921649

約数列:

[1, 3, 7, 9, 19, 21, 27, 53, 57, 63, 107, 133, 159, 171, 189, 321, 371, 399, 477, 513, 749, 963, 991, 1007, 1113, 1197, 1431, 2033, 2247, 2889, 2973, 3021, 3339, 3591, 5671, 6099, 6741, 6937, 7049, 8919, 9063, 10017, 14231, 17013, 18297, 18829, 20223, 20811, 21147, 26757, 27189, 39697, 42693, 51039, 52523, 54891, 56487, 62433, 63441, 106037, 107749, 119091, 128079, 131803, 153117, 157569, 169461, 187299, 190323, 318111, 323247, 357273, 367661, 384237, 395409, 472707, 508383, 742259, 754243, 954333, 969741, 997937, 1071819, 1102983, 1186227, 1418121, 2014703, 2226777, 2262729, 2862999, 2909223, 2993811, 3308949, 3558681, 5619961, 6044109, 6680331, 6788187, 6985559, 8981433, 9926847, 14102921, 16859883, 18132327, 20040993, 20364561, 20956677, 26944299, 39339727, 42308763, 50579649, 54396981, 62870031, 106779259, 118019181, 126926289, 151738947, 188610093, 320337777, 354057543, 380778867, 747454813, 961013331, 1062172629, 2242364439, 2883039993, 6727093317, 20181279951]

約数ペア:

[(1, 20181279951), (3, 6727093317), (7, 2883039993), (9, 2242364439), (19, 1062172629), (21, 961013331), (27, 747454813), (53, 380778867), (57, 354057543), (63, 320337777), (107, 188610093), (133, 151738947), (159, 126926289), (171, 118019181), (189, 106779259), (321, 62870031), (371, 54396981), (399, 50579649), (477, 42308763), (513, 39339727), (749, 26944299), (963, 20956677), (991, 20364561), (1007, 20040993), (1113, 18132327), (1197, 16859883), (1431, 14102921), (2033, 9926847), (2247, 8981433), (2889, 6985559), (2973, 6788187), (3021, 6680331), (3339, 6044109), (3591, 5619961), (5671, 3558681), (6099, 3308949), (6741, 2993811), (6937, 2909223), (7049, 2862999), (8919, 2262729), (9063, 2226777), (10017, 2014703), (14231, 1418121), (17013, 1186227), (18297, 1102983), (18829, 1071819), (20223, 997937), (20811, 969741), (21147, 954333), (26757, 754243), (27189, 742259), (39697, 508383), (42693, 472707), (51039, 395409), (52523, 384237), (54891, 367661), (56487, 357273), (62433, 323247), (63441, 318111), (106037, 190323), (107749, 187299), (119091, 169461), (128079, 157569), (131803, 153117)]