20149791025

素因数分解:

$5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{283}}^1$

素因数の和:600

約数の個数: 144

約数和(自身を含む): 33385613184

約数和(自身を除く): 13235822159

約数列:

[1, 5, 7, 13, 17, 25, 35, 49, 65, 85, 91, 119, 175, 221, 245, 263, 283, 325, 425, 455, 595, 637, 833, 1105, 1225, 1315, 1415, 1547, 1841, 1981, 2275, 2975, 3185, 3419, 3679, 4165, 4471, 4811, 5525, 6575, 7075, 7735, 9205, 9905, 10829, 12887, 13867, 15925, 17095, 18395, 20825, 22355, 23933, 24055, 25753, 31297, 33677, 38675, 46025, 49525, 54145, 58123, 62543, 64435, 69335, 74429, 85475, 91975, 111775, 119665, 120275, 128765, 156485, 167531, 168385, 180271, 219079, 235739, 270725, 290615, 312715, 322175, 346675, 372145, 406861, 437801, 521003, 598325, 643825, 782425, 837655, 841925, 901355, 967577, 1095395, 1178695, 1265293, 1453075, 1563575, 1860725, 2034305, 2189005, 2605015, 2848027, 3064607, 3647021, 4188275, 4506775, 4837885, 5476975, 5893475, 6326465, 6773039, 8857051, 10171525, 10945025, 13025075, 14240135, 15323035, 16448809, 18235105, 24189425, 31632325, 33865195, 44285255, 47411273, 61999357, 71200675, 76615175, 82244045, 91175525, 115141663, 169325975, 221426275, 237056365, 309996785, 411220225, 575708315, 805991641, 1185281825, 1549983925, 2878541575, 4029958205, 20149791025]

約数ペア:

[(1, 20149791025), (5, 4029958205), (7, 2878541575), (13, 1549983925), (17, 1185281825), (25, 805991641), (35, 575708315), (49, 411220225), (65, 309996785), (85, 237056365), (91, 221426275), (119, 169325975), (175, 115141663), (221, 91175525), (245, 82244045), (263, 76615175), (283, 71200675), (325, 61999357), (425, 47411273), (455, 44285255), (595, 33865195), (637, 31632325), (833, 24189425), (1105, 18235105), (1225, 16448809), (1315, 15323035), (1415, 14240135), (1547, 13025075), (1841, 10945025), (1981, 10171525), (2275, 8857051), (2975, 6773039), (3185, 6326465), (3419, 5893475), (3679, 5476975), (4165, 4837885), (4471, 4506775), (4811, 4188275), (5525, 3647021), (6575, 3064607), (7075, 2848027), (7735, 2605015), (9205, 2189005), (9905, 2034305), (10829, 1860725), (12887, 1563575), (13867, 1453075), (15925, 1265293), (17095, 1178695), (18395, 1095395), (20825, 967577), (22355, 901355), (23933, 841925), (24055, 837655), (25753, 782425), (31297, 643825), (33677, 598325), (38675, 521003), (46025, 437801), (49525, 406861), (54145, 372145), (58123, 346675), (62543, 322175), (64435, 312715), (69335, 290615), (74429, 270725), (85475, 235739), (91975, 219079), (111775, 180271), (119665, 168385), (120275, 167531), (128765, 156485)]